高中情态动词语法练习题
高中英语情态动词经典习题(含答案)
C．couldn’t have eatenD．shouldn’t have eaten
【答案】D
【解析】
【详解】
考查情态动词和虚拟语气。句意：——你怎么了？——我生病了，我刚才不应该吃那么多冰激凌。A. shouldn’t eat不应该吃；B. mustn’t eat禁止吃；C. couldn’t have eaten不可能吃；D. shouldn’t have eaten本来不应该吃。根据just now可知，是发生在过去，故选D。
A．should have avoidedB．should be avoided
C．could have avoidedD．could have been avoided
【答案】D
【解析】
【详解】
考查“情态动词+完成式”。句意：如果愤怒的女乘客和巴士司机保持冷静，这起导致15人死亡的事故本来是可以避免的。could have done“本来能做而没有做”，且句子主语The accident和谓语动词avoid之间是被动关系，结合句意可知答案为D。
—Sorry, I will stop right now.
A．MayB．Shall
C．WillD．Must
【答案】D
【解析】
试题分析：考查情态动词的用法。May可以，可能Shall： 用于第一三人称的疑问句，表示说话人征求对方的意见或向对方请示。用于二三人称的陈述句表示说话人给对方的命令、警告、允诺、威胁或决心等。用于法律、法规条文、合同等，按规定应该履行的义务等。Will表示请求或建议；表示意愿或表示现在的习惯D. Must表示“必须”“一定”“偏要”之意。此处must表示“偏要,偏偏”。句意：——你偏要在深夜又唱又跳吗？——很抱歉，我会马上停止。
高中情态动词练习题及答案详解
高中情态动词练习题及答案详解一、单项选择情态动词1．—_______ you disturb me now? I’m busy preparing a report.— Terribly sorry, but I have something urgent to tell you.A．Need B．Should C．Might D．Must【答案】D【解析】【详解】考查情态动词特殊用法。
句意：—你非要现在打扰我吗？我正在准备一份报告。
—真对不起，但是我怕有紧急事情告诉你。
A. Need需要；B. Should 应该；C. Might也许；D. Must 必须；一定；偏偏，非得；根据语境可知must表示“偏偏，非得”符合上下文语境，用来指责对方。
故D项正确。
2．Keep up your spirits even if you _____ fail hundreds of times.A．must B．needC．may D．should【答案】C【解析】【详解】考查情态动词。
A. must必须；B. need需要；C. may可能，或许；D. should应该。
句意：即使失败了几百次，也要振作起来。
此处表示一种不确定的推测，故选C。
3．Most of the top leaders expressed a common desire at the UN conference, ______ that different cultures ______ coexist with tolerance.A．the one ; must B．the one ; should C．one ; must D．one ; should【答案】D【解析】【详解】考查替代和情态动词。
句意：大多数高层领导人在联合国大会上表达了一个共同的愿望，即不同的文化应该与宽容共存。
大多数高层领导人在联合国大会上表达了一个共同的愿望，即不同的文化应该与宽容共存。
高中英语情态动词练习(附答案)
高中英语语法练习-情态动词一、基础练习1.He ___ have completed his work; otherwise, he wouldn't be enjoying himself by the seaside.A. shouldB. mustC. wouldn'tD. can't2. I _____ have been more than six years old when the accident happened.A. shouldn'tB. couldn'tC. mustn'tD. needn't3. This cake is very sweet. You ____ a lot of sugar in it.A. should putB. could have putC. might putD. must have put4. He paid for a seat, when he ____ have entered free.A. couldB. wouldC. mustD. need5. I was on the highway when his car went past followed by a police car. They ____ at least 150 kilometers an hour.A. should have been doingB. must have been doingC. could have doneD. would have done6. — Tom is never late for work. Why is he absent today?— Something __________ to him.A. must happenB. should have happenedC. could have happenedD. must have happened7. - Do you know where David is? I couldn't find him anywhere.- Well. He _______ have gone far-his coat is still here.A. shouldn'tB. mustn'tC. can'tD. wouldn't8. -Lucy doesn't mind lending you her dictionary.- She __________. I've already borrowed one.A. can'tB. mustn'tC. needn'tD. shouldn't9. - Catherine, I have cleaned the room for you.- Thanks. You _____ it. I could manage it myself.A. needn't doB. needn't have doneC. mustn't doD. shouldn't have done10. There________ be any difficulty in passing the road test since you have practised a lot in the driving school.A. mustn'tB. shan'tC. shouldn'tD. needn't11. - The woman biologist stayed in Africa studying wild animals for 13 years before she returned.-Oh, dear! She ________ a lot of difficulties!A. may go thoughB. might go throughC. ought to have gone throughD. must have gone though12. -I've taken someone else's green sweater by mistake.-It ______ Harry's. He always wears green.A. has to beB. will beC. mustn't beD. could be13. Helen _______ go on the trip with us, but she isn't quite sure yet.A. shallB. mustC. mayD. can14. If I ________ plan to do anything I wanted to, I'd like to go to Tibet and travelthrough as much of it as possible.A. wouldB. could C have to D. ought to15. You might just as well tell the manufacturer that male customers_____ not like the design of the furniture.A. mustB. shallC. mayD. need16. -Who is the girl standing over there?- Well, if you ______ know, her name is Mabel.A. mayB. canC. mustD. shall17. Children under 12 years of age in that country______ be under adult supervisionwhen in a public library.A. mustB. mayC. canD. need18. "The interest ______ be divided into five parts, according to the agreement madeby both sides," declared the judge.A. mayB. shouldC. mustD. shall19. -- I'll tell Mary about her new job tomorrow.--You _______ her last week.A. ought to tellB. would have toldC. must tellD. should have told20. I ______ pay Tom a visit, but I'm not sure whether I will have time this Sunday.A. shouldB. mightC. wouldD. could21. --I don't mind telling you what I know.--You ________. I'm not asking you for it.A. mustn'tB. may notC. can'tD. needn't22. --Excuse me, but I want to use your computer to type a report.--You________ have my computer if you don't take care of it.A. shan'tB. might notC. needn'tD. shouldn't23. --Excuse me. Is that the right way to the Summer Palace?--Sorry, I'm not sure, but it ______ be.A. mightB. willC. mustD. can24. --Mum, I've been studying English since 8 o'clock. ________ I go out and playwith Tom for a while?--No, I'm afraid not. Besides, it's raining outside now.A. can'tB. wouldn'tC. may notD. won't25. I often see lights in that empty house. Do you think I _____report it to the police?A. shouldB. mayC. willD. can26. Mr. White_______ at 8:30 for the meeting, but he didn't show up.A. should have arrivedB. should arriveC. should have had arrivedD. should be arriving27. You ________ be tired-you've only been working for an hour.A. must notB. won'tC. can'tD. may not二、提高练习1．--- Shall I tell John about it?--- No, you ______. I’ve told him already.A. needn’ｔB. wouldn’ｔC. mustn’ｔD. shouldn’ｔ2. --- There were already five people in the car, but they managed to take me as well.--- It ______ a comfortable journey.A. can’t beB. shouldn’t beC. mustn’t have beenD. couldn’t have been3. --- Why didn’t you come to see me?--- I ______, but I was too busy yesterday.A. like toB. should like toC. would like to haveD. am going to-behaved gentleman ______ be so rude to a lady.4. You can’t imagine that a wellA. mightB. needC. shouldD. would5. There was plenty of time; she ______.A. mustn’t have hurriedB. needn’t have hurriedC. may not have hurriedD. wouldn’t have hurried6. --- Is John coming by air?--- He should, but ______ not. He likes taking trains.A. mustB. canC. needD. may7. --- ______ it be Li Ping who broke the glass?--- No. It ______ be Wang Hai who did it.A. Could; mayB. Can; canC. May; mustD. Can; must8. When the old man was alive, he ______ sit for hours at the door.A. wouldB. couldC. mustD. might9. Jack, you ______ play with the knife; you ______ hurt yourself.A. won’t; can’ｔB. mustn’t; mayC. shouldn’t; mustD. can’t; should10. I’ve decided to take the job and I ______ change my mind.A. mustn’ｔB. can’ｔC. won’ｔD. may not11. She ______ into the thick forest alone on such a dark night.A. dares not goB. dares not to goC. dare not to goD. doesn’t dare to go12. My parents never remember my telephone number, and they always ______ look it up.A. mustB. canC. shouldD. have to13. --- Where is Jack? I can’t find him anywhere.--- He ______ his homework upstairs.A. might have doneB. must have doneC. might be doingD. must do14. He ______ you more help, even though he was very busy.A. might have givenB. might giveC. may have givenD. may give15. --- If he ______, he ______ that food.--- Luckily he was sent to the hospital immediately.A. was warned; would not takeB. had been warned; would not have takenC. would be warned; had not takenD. would have been warned; had not taken16. --- I hear you've got a set of valuable Australian coins. ____I have a look ?--- Yes, certainly.A. DoB. MayC. ShallD. Should17. — When can I come for the photos? I need them tomorrow afternoon.。
高中情态动词练习题及答案详解
高中情态动词练习题及答案详解一、单项选择情态动词1．I ______ worry about my weekend—I always have my plans ready before it comes. A．can’t B．mustn’t C．daren’t D．needn’t【答案】D【解析】【详解】考查情态动词。
句意：我没有必要担心我的周末，我总是在周末到来之前做好计划。
A. can’t 不可能;B. mustn’t禁止;C. daren’t不敢; D .needn’t没有必要。
由“I always have my plans ready before it comes ”可知，needn’t “没有必要” 符合句意。
故选D。
2．—I don’t really like Janes. Why did you invite him?—Don’t worry. He come. He said he was’t certain what his plans were.A．must not B．need not C．would not D．might not【答案】D【解析】考察情态动词，题干中的he wasn’t certain说明他可能不来，可能来，因此使用不完全否定，might not。
3．It is really cold and the ground is wet; it ________ have rained last night.A．might B．mustC．can D．should【答案】B【解析】【详解】考查情态动词辨析。
句意：天气很冷而且地面是湿的，昨晚一定下了雨。
根据上文the ground is wet可知，“昨晚下了雨”是肯定的，故用must have done“必定做了……”表示对过去十分有把握的推测，故选B。
【点睛】must have done用法辨析must have done：表示对过去的肯定的逻辑推测，推定某件事情、动作或状态可能在过去发生过（存在过）。
高中情态动词练习(附答案)
高中情态动词练习(附答案)一、单项选择情态动词1． ---Is Jack on duty today?---It ________ be him. It's his turn tomorrow.A．mustn't B．won't C．can't D．needn't【答案】C【解析】【详解】考查情态动词表示推测。
句意：--今天杰克值日吗？--不可能是他。
明天该轮到他。
can’t be 用于否定推测“不可能是”，must表示推测的时候，表示“肯定是”，won’t不愿意，needn’t 不必，故选C。
2．It ________ be the postman at the door. It's only six o'clock.A．mustn't B．can'tC．won't D．needn't【答案】B【解析】D[考查虚拟语气。
句意：不可能是邮递员在门口，才六点钟呢。
mustn't 禁止，不允许；can't 不可能；won't 不愿意，就是不，偏不；needn't 不需要。
]3．--- Oh, my God! I just missed the last bus back home.--- That’s really bad. I’m sure you ______ it, but you just didn’t hurry up.A．had caught B．could have caught C．could catch D．can catch【答案】B【解析】【详解】考查情态动词+have done结构。
句意：——哦,我的上帝!我刚好错过了回家的末班车。
——这是非常糟糕的。
我肯定你能赶上，但你就是不抓紧。
could have done“本来能做而没有做”。
故选B。
4．The accident which left 15 people on board dead ________ if both the angry female passenger and the bus driver had kept calm.A．should have avoided B．should be avoidedC．could have avoided D．could have been avoided【答案】D【解析】【详解】考查“情态动词+完成式”。
高中英语情态动词形式练习题40题含答案解析
高中英语情态动词形式练习题40题含答案解析1.She is very quiet. She ____ be shy.A.mustB.canC.mightD.should答案解析：C。
must 表示肯定的推测，语气非常强；can 表示可能性，但在这个语境中不太符合；might 表示可能性较小，符合“她很安静”这个描述推测她可能害羞；should 表示应该，不符合推测的意思。
2.The book is missing. Someone ____ have taken it.A.mustB.canC.mightD.should答案解析：A。
书不见了，一定是有人拿走了，must 表示肯定的推测，语气很强。
can 和might 语气较弱；should 表示应该，不符合语境。
3.He is always late. He ____ be very disorganized.A.mustB.canC.might答案解析：A。
他总是迟到，肯定是非常没有条理，must 表示肯定的推测，语气强。
can 和might 可能性较小；should 表示应该，不合适。
4.The lights are on. Someone ____ be at home.A.mustB.canC.mightD.should答案解析：A。
灯亮着，肯定有人在家，must 表示肯定的推测，语气强。
can 和might 可能性较小；should 表示应该，不符合语境。
5.The test was very difficult. She ____ have passed it.A.mustB.canC.mightD.should答案解析：C。
考试很难，她可能通过了，might 表示可能性较小。
must 语气太强；can 表示可能性，但不太符合这个语境；should 表示应该，不符合推测的意思。
6.He looks very tired. He ____ have worked hard.A.mustB.canD.should答案解析：A。
高中情态动词练习(附答案)
高中情态动词练习(附答案)一、单项选择情态动词1．The door ________ open, no matter how hard she pushed.A．shouldn’t B．couldn’tC．wouldn’t D．mightn’t【答案】C【解析】【详解】考查情态动词。
句意：无论她怎么使劲推，门就是打不开。
A. shouldn’t不应该；B. couldn’t 不能够；C. wouldn’t不愿意；D. mightn’t可能不。
will及其过去式would均可表示一种倾向性、习惯。
故选C。
2．--- Oh, my God! I just missed the last bus back home.--- That’s really bad. I’m sure you ______ it, but you just didn’t hurry up.A．had caught B．could have caught C．could catch D．can catch【答案】B【解析】【详解】考查情态动词+have done结构。
句意：——哦,我的上帝!我刚好错过了回家的末班车。
——这是非常糟糕的。
我肯定你能赶上，但你就是不抓紧。
could have done“本来能做而没有做”。
故选B。
3．Paul did a great job in the speech contest. He many times last week.A．need have practised B．might practiseC．must have practised D．could practise【答案】C【解析】【详解】考查情态动词。
句意：保罗在演讲比赛中表现得很好。
他上星期一定练习了很多次。
must have done是对过去发生的动作最有把握的猜测，意思是“一定”。
故C选项正确。
4．He is a bad-tempered fellow, but he ________ be quite charming when he wishes.A．shall B．shouldC．can D．must【答案】C【解析】【详解】考查情态动词辨析。
高中英语情态动词练习含答案
高中英语情态动词练习1、Many a time，the Chinese government urged that American government stop selling advancedweapons to Taiwan，but it__________ listen，__________Sino-US relations.A. won’t；damagingB. wouldn’t；damagingC. shouldn’t; to damageD. wouldn’t：to damage2、it have been the failure to pick up directions from the ground control that caused the air crash?A. MustB. CouldC. WouldD. Should3、—Look! It’s raining again.— Why _____ it rain on Sundays? We are always staying inside! What a nuisance!A．need B．must C．does D．should4、 ---Why ______ you stay in the countryside, where it is not convenient to go shopping?---- But I’ve found it rather valuable for my health.A .can B. must C. may D. shall5、一What does the sign over there read?一“No person ________ smoke or carry a lighted cigarette，cigar or pipe in this area．”A. willB. mayC. shallD. must6、—Have you checked the engine?—Yes, I did twice; there be anything wrong with the car.A. won’tB. mustn’tC. needn’tD. shouldn’t7、The doctor recomm ended that you swim after eating a large meal.A.wouldn’tB.couldn’tC.needn’tD.shouldn’t8、His failure in the exam suggested that he _______ the teacher's instructions.A. can't have followedB. needn't have followedC. mustn't have followedD. shouldn't have followed9、The missing children haven’t been found yet. Something terrible ________ to them.A. may happenB. should have happenedC. must happenD. might have happened10、I don't know how he _______that I'm lazy , _______he's been in bed all day.A. dare to say , thatB. dares say , whileC. dare say , asD. dares to say, when11、—You didn’t wait for Elizabeth last night, did you?— Yes, but we ______. She didn’t come at all.A. don’t have toB. needn’t haveC. need toD. should have12、I’m glad that you have managed to come, but you _____ have brought wine．We’ve got plenty.A wouldn’t B．needn’t C．mustn’t D．couldn’t13、The school rules state that no child ____________ be allowed out of the school during the day,unless accompanied by an adult.A. couldB. shallC. mightD. should14、The famous writer often says that he ________ so much without the support andencouragement from his wife.A. shouldn’t achieveB. shouldn’t have achievedC. couldn’t achieveD. couldn’t have achieved15、—Did you lock the door？—No, I ____, but I forgot.A. shouldB. must haveC. mustD. should have16、 ----Who’s the man giving the speech?---Well, if you ______know, his name is Lyric.A. mayB. canC. shallD. must17、—Mum, I am sorry, but I failed in the English exam.—So you __________ get the MP4 you want. I am sorry, too.A. shall notB. might notC. needn’tD. shouldn’t18、According to the school rule, no student go out during the class without the teacher’spermission.A. couldB. needC. shallD. would19、 You ______ pay too little attention to your reading skills, as they are so important.A. shouldB. mustn’tC. can’tD. needn’t20、 The Chinese government advocates that countries along the modern silkroad work together and share future success.A. mustB. mightC. shouldD. could21、If I _____ fall in and can’t come for work, please find someone to cover for me.A. mustB. willC. shouldD. may22、Don’t you think it essential that every resident of Nanjing spare no effort to makecontributions to Nanjing Youth Olympic Games?A．should B．will C．shall D．would23、 ---How do you find your new teacher?---Excellent. We ______hope for a better one. All the students think highly of him.A. shouldB. mightC. mustn’tD. couldn’t24—Hey, __ the boy with a blue backpack come over here? We need another hand with this table. —Me? Oh, sorry, but I’ve got an injury in my leg.A. shallB. wouldC. shouldD. must25、— How is the smog control going on in our capital city?—It couldn’t be worse. You ________ believe Beijing upgraded the smog alert from yellow to orange and then red again yesterday.A. won’tB. mustn’tC. needn’tD. shouldn’t26、—I’m really surprised that a policeman in his car ______ have hit several commonpedestrians, killing one and injuring three.— Yes. If one ______ ask for trouble, what can we say?A. would; willB. should; mustC. must mayD. need; dare27、― Why ______ you stay in the countryside, where it is not convenient to go shopping?―But I’ve found it rather valuable for my health.A. canB. mustC. mayD. shall28、 If Doric continue doing things like that, he _______ face the music one day！A. canB. shouldC. wouldD. shall29、 No student _________ go out of the school campus after 10:00 at night without permissionaccording to the school regulations.A. shallB. mustC. wouldD. should30、 Mr.Smith is on time for everything. How he be late for the ceremony?A. willB.canC.shallD.may31、—Shall I inform him of the change of the schedule right now?—I am afraid you______, in case he comes late for the meeting.A.willB.mustC.mayD.can32、—It’s amazing that Beijing and Zhangjiakou have won the bid for the 2022 Winter Olympics！—Sure it is！The government __________ have made great efforts！A．could B．should C．might D．must33、It’s nearly eight o’clock．I must hang up and get down to work．My boss be here at anymoment．A．should B．must C．could D．would34、—What is an ideal team leader like?—He ______ be responsible, determined and creative．A．can B．may C．would D．should35、一I'm going to Tibet for some days.一Really? How I wish I ________get away for a while.A. mustB. shallC. couldD. need36、 ---_____ you always question everything I say?---Sorry if I make you unhappy; but it’s my habit to question before I believe.A. ShallB. WillC. MustD. Can37、—The task is challenging and demanding. Who do you think can make it?—my partner have a try? I think she is the right person to do it.A．Will B．Might C．Should D．Shall38、The little child ________ go out alone at night, so he ________ walk in the dark that night.A. daren't; didn't dare toB. doesn't dare; dare notC. isn't dare to; dared not toD. doesn't dare to; dare not to39、 English is a language that many people around the world________ not speak perfectly but____ at least understand.A. may; canB. would; mightC. will; mustD. could; might40、---I ________ myself more---it was a perfect day.---Me, too. It’s years ________ I enjoyed myself so much.A.couldn’t have enjoyed; sinceB.needn’t have enjoyed; sinceC.wouldn’t have enjoyed; beforeD.shouldn’t have enjoyed; before1、B2、B3、B4、B5 C6、D7、D8、A9、D10、D11、B12、b13、B14、D15、D16、D17、A18、C19、C20、C21、C22、A23、D24、B25、A26、B27、B28、D29、A30、B31、B32、D33、A34、D35、C36、C37、D38、A39、A40、A。
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情态动词练习题Ⅰ. 单项选择(45%)1.I thought you _________like something to read, so I have brought you some books.A.mayB.mightC.couldD.must2.You__________ to the meeting this afternoon if you have something important to do.A. needn't to comeB. don't need comeC. don't need comingD. needn't come3. He__________you more help, even though he was very busy.A. might have givenB. might giveC. may have givenD. may give4.---________I help you with some shoes, madam?--- Yes, I would like to try on those brown ones.A. WillB. ShouldC. MayD. Must5. The reason why they _______leave wasn't explained to us.A. hadB. had toC. mustD. might6. I searched for my wallet and it wasn't there. I thought I______it at home.A. left B. have left C. might have left D. could have left7. I _____asleep because it took me a long time to realize that the telephone was ringing. A. could have fallen B. should have fallenC. must have fallen D. mustn't have fallen8. The only thing that really matters to the children is how soon they ______return to their school.A. canB. mustC. have toD. ought to9. I want to go to the chemist's, but you______go with me.. need not B. must not C. need D. must10. I thought it over, but______come to no conclusion.A. canB. couldC. shouldD. would11. What we _____get seems better than what we have.A. canB. couldC. can'tD. couldn't12.─My goodness! I've just missed the train.─That's too bad. I am sure you ______it, if you had hurried.A. could have caught B. had caught C. would catch D. could catch13. Look! What you've done! You _____more careful.A. may beB. had toC. should have beenD. would be14. ______I repeat the question?A. ShallB. WillC. Do you want thatD. Do15. Professor Li, many students want to see you.____they wait here or outside!A. DoB. WillC. ShallD. Are16. You read that book if you don't want to.A. haven't B. can't C. mustn't D. needn't17. Johnny, you play with the knife; you____hurt yourselfA. won't; can'tB. can't; shouldn'tC. shouldn't; mustD. mustn't; may18. It's nearly seven o'clock. Jack______be here at any moment.A. mustB. needC. canD. should19. ─ There were already 5 pe ople in the car, but they managed to take me as well. ─It ____a comfortable journey.A. can't beB. shouldn't beC. couldn't have beenD. mustn't have been20. Tom ought not to_____me your secret, but he meant no harm.A. have toldB. tellC. be telling C. having told21. Everyone is here.______we start the meeting?A. CanB. MustC. ShouldD. Shall22. I parked my car right here but now it's gone. It _______.A. must be stolenB. may be stolenC. must have stolenD. must have been stolen23. He______the work yesterday, but he didn't. A. must have finished B. need have finishedC. finished D. should havefinished24. He did not pass the examination. As a good student, he______A. mustn't have failedB. may not have failedC. needn't have failedD. shouldn't have failed25. ______it be true that Albert passed the test in geography?A. MayB. shouldC. CouldD. would26. You_____lead a horse to the water but you not make it drink.A. will; canB. may; canC. may; dareD. dare; can27. ─Must we finish the composition in class? ─No, you_____A. needn'tB. mustn'tC. won'tD. shouldn't28. Her eyes were red. She ______A. must cryB. must be criedC. must have been cryingD. may cry29. Mary ________his letter, otherwise she would have replied before now. A. has received B. must receiveC. couldn't have received D. shouldn't have received30. I told Sally how to get here, but perhaps I________ for her. A. had to write it out B. must have written it outC. should have written it out D. ought to write it outⅡ. 用所给动词的适当形式填空(10%)─Hello. Gerry speaking.─Hello, Gerry. It's me John here. Why aren't you here at the meeting?─Well, I'm terribly sorry, but I'm not feeling very well.─Is that all? We thought you might (have) an accident or (forget) the day or something.─No, I'm sorry. I was sick all night. I think it must(be) the fish I ate last night.─Well, I think you should at least (phone) Kate and (tell) her you weren't coming to the meeting.─Yes, I suppose I should (do) so. I'm sorry about that. Anyway, I think I'll be able to get in to work tomorrow.─OK, Take care and don't eat any more fish.─I won't. Thanks for calling.─That's all right.Ⅲ. 用would, should, must , have to 填空(20%)1.─ I have not a raincoat with me.─That's why I _______wait until the rain stops.2._______you be so kind as to keep an eye on my house while I am away?3. It is important that I ______see him at once.4._______the pain return，take one of these pills.5. They didn't dare to leave the train lest they________be attacked by wolves.6. He ordered that Tom______leave the house at once.7. The last bus has left. We _____walk home.8. The weather was bad. We______wait for two hours at the airport before we took off.9. You______come and see us sometime.Ⅳ. 把下列句子译成英语(25%)1.她一定把钥匙丢了.2.他们一定走了,可是应当给我留一个条子呀!3.你本不必要把整个课文都译成汉语.4.我是可能早一些来的,可是我在路上碰到一个朋友.5.下一次你应该更小心些答案Ⅰ. 1.B 2.D 3.A 4. C 5. B 6. C 7. C 8. A 9. A 10. B 11.C 12.A 13.C 14.A 15.C 16.D 17.D 18.D 19.C 20.A 21.D 22.D 23.D 24.D 25. C 26.B 27.A 28.C 29.C 30.CⅡ. have had; forgotten; be; hav；honed; told;have done;Ⅲ. 1. have to 2. Would 3. should 4. Should5. should 6. should7. have to/will have to 8. had to 9. must 10. mustⅣ.1. She must have lost her key.2. The must have left, but they should have left us a note.3. You needn't have translated the whole text into Chinese.4. I could have arrived a little earlier, but I met a friend of mine on the way.5. You should be more careful next time.。