高考英语一轮复习定语从句拔高难题
定语从句拔高题
1.He has made another wonderful discovery, of great importance to science.
A.which I think is
B.whick I think it is
C.of which I think it is
D.I think which is
2.She is a girl . She will never let you down.
A.you can believe
B.you can believe in
C.you can have trust on
D.whom you have belief
3.I have finished reading a large part of the book, is more difficult.
A.the other
B.the rest
C.the other part
D.the rest of which
4.The cloth they made clothes is very beautiful.
A.from which
B.by which
C.of which
D.into which
5.Mrs. Brown was much disappointed to see the washing machine she had had
went wrong again.
A.it
B.it repaired
C.repaired
D.to be repaired
6.We have several subjects, and I think English is the easiest .
A.of which, to study
B.among which, to be learned
C.of those, to follow
D.among them, to be picked up
7.He devoted all his time he could spare me.
A.to help
B.to helping
C.help
D.in helping
8.Is there a cinema around I can see a film?
A.that
B.which
C.where
D.what
9.The theory he has stuck us that earthquakes can be forecast.
A.to prove to
B.to proves to
C.proves to
D.which proved
10.The great trouble he show us how to run the machine him completely tired.
A.took to, made
B.takes to, make
C.took, make
D.take to, to make
11.The only thing, I am sure, is the idiom.
A.for which
B.of which
C.that
D.which
12.Which of the two sheep you keep produces more milk?
A.that
B.which
C.what
D.they
13.It was in that house he used to live the secret meeting was held.
A.where, where
B.that, that
C.what, where
D.where, that
14.That tree, branches are almost bare, is a very old one.
A.whose
B.of which
C.in which
D.on which
15.He is a man with rich experience, from much can be learned.
A.whom
B.which
C.where
D.what
16.It is our parents we depend when we are in trouble.
A.whoever
B.whomever
C.on whom
D.in which
17.The reason nothing on earth is motionless is the earth is in constant motion.
A.why, that
B.that, why
C.of, that
D.that, because
18.The castle, about 1200 BC, is our history museum.
A.that dates from
B.which names
C.which dates back to
D.where dates from
19.The book I am reading is I borrowed from the library.
A.that
B.the one
C.which
D.one
20.cleans the blackboard is to be praised.
A.Anyone
B.The boy
C.The one
D.The one who
21.She told us about the professor and universities she has visited in the US.
A.that
B.which
C.who
D.where
22.During the days , he worked as a servant at the Browns’.
A.followed
B.following
C.to follow
D.that followed
23.I will call on my friend Tom, the manager company is my father’s student.
A.of whom
B.of whose
C.whose
D.that
24.Is it the country you studied you are going to visit next week?
A.in which, which
B.where, that
C.that, that
D.which, that
25.He is the only of the three got the new idea.
A.who have
B.whom have
C.who has
D.whose had
26.We went into the office sat the manager with a pair of glasses on.
A.which
B.that
C.there
D.where
27.They climbed up the mountain many people were planting trees, and
a lot of sheep were eating grass.
A.where, where
B.that, that
C.where, that
D.that, which
28.That is the writer a lot of books were written.
A.by whom
B.who
C.whose
D.whom
29.She studied hard when she was in school, contributes greatly to her career.
A.that
B.so
C.so that
D.which
30.He spent all the money he could save buying books.
A.that
B.which
C.as
D.what
B.答案ABDCC CBCBA BADDA CACBD ADBBC DAADA
最新英语定语从句专题训练答案
最新英语定语从句专题训练答案 一、定语从句 1． ---Our English teacher is very kind, and we all like her very much. ---That’s for sure. A person _________ cares for others is popular everywhere. A． who B． which C． whom D． whose 【答案】A 【解析】 试题分析：句意：--我们的英语老师非常的善良，并且我们非常喜欢她。--那是当然。一个关心他人的人到处都受到欢迎。根据先行词是person,所以引导词用that 或者who。结合选项，故选A。 考点：考查定语从句的用法。 2．Linda will never forget the words her father told her. A．that B．who C．where D．what 【答案】A 【解析】 【详解】 句意：Linda将永远不会忘记她父亲告诉她的这些话。that关系代词，引导定语从句，先行词可以为人或物；who关系代词，引导定语从句，先行词为人；where是关系副词，引导定语从句，在从句中作地点状语；what什么，常引导名词性从句，不能引导定语从句。根据句子结构可知，这里是一个定语从句，修饰空前的the words，指物，且在从句中作宾语，故应选A。 3．The girl handed everything _____ she had picked up in the street to the police. A．which B．in which C．that D．all 【答案】C 【解析】 【详解】 句意：女孩把她在街上捡到的所有东西都交给了警察。 考查定语从句。本句先行词everything是不定代词，应该用关系代词that引导此定语从句。故选C。 4．Yesterday, Mr. Green went to his hometown and visited the old house ____ he was born in. A．which B．where C．what D．it 【答案】A 【解析】 试题分析：句意：昨天，格林先生去了他的家乡并且参观了他出生时的那所旧房子。____ he was born in是定语从句，修饰house。先行词是house，关系代词词用that或者which，
高三英语一轮复习： 定语从句+名词性从句+主语从句练习题(附带答案和解析)
定语从句 1. After living in Australia for many years, Louise finally returned to the country she was born. 2. There are many good websites you can check out the latest in the science world. 3.Another saying which has come from the fable is "God helps those help themselves”. 4. Then Needham began his lifelong research, ended up creating the greatest work--Science and Civilization in China. 5. His interest started a few years ago, he was in college and studying wildlife science. 6. There are perhaps 40 million competitive table tennis players and many ordinary people play less seriously. 7. He was a great scientist and extraordinary man work and legacy will live on for many years. 8. That is an Oxford college, famous graduates include the late Benazir Bhutto. 9. But it's not like many other countries there seems to be tension among the different cultures. 10. Then, a fire, broke out in 1969 on Cleveland's Cuyahoga River, shed light on the problem of chemical pollution in water. 11. Pupils, usually come from the fifth or sixth grade, are
定语从句专项练习题及详解50题
定语从句专项练习题及详解50题 1.The place _______interested me most was the Children's Palace. A. Which B. where C. what D. in which 2.Do you know the man _______? A. whom I spoke B. to who spoke C. I spoke to D. that I spoke 3.This is the hotel _______last month. A. which they stayed B. at that they stayed C. where they stayed at D. where they stayed 4.Do you know the year ______the Chinese Communist Party was founded? A. which B. that C. when D. on which 5.That is the day ______I'll never forget. A. which B. on which C. in which D. when 6.The factory ______we'll visit next week is not far from here. A. where B. to which C. which D. in which 7.Great changes have taken place since then in the factory _______we are working. A. where B. that C. which D. there 8.This is one of the best films _______. A. that have been shown this year B. that have shown C. that has been shown this year D. that you talked 9.Can you lend me the book ______the other day? A. about which you talked B. which you talked C. about that you talked D. that you talked 10.The pen ______he is writing is mine. A. with which B. in which C. on which D. by which 11.They arrived at a farmhouse, in front of ______sat a small boy. A. whom B. who C. which D. that 12.The engineer ______my father works is about 50 years old. A. to whom B. on whom C. with which D. with whom 13.It there anyone in your class ______family is in the country? A. who B. who's C. which D. whose 14.I'm interested in ______you have said. A. all that B. all what C. that D. which 15.I want to use the same dictionary ______was used yesterday. A. which B. who C. what D. as 16.He isn't such a man ______he used to be. A. who B. whom C. that D. as 17.He is good at English, ______we all know. A. that B. as C. whom D. what 18.Li Ming, ______to the concert enjoyed it very much. A. I went with B. with whom I went C. with who I went D.I went with him 19.I don't like ______ as you read. A. the novels B. the such novels C. such novels D. same novels 20.He talked a lot about things and persons ________they remembered in the school. A. which B. that C. whom D. what 21.The letter is from my sister, ______is working in Beijing. A. which B. that C. whom D. who
2020高三英语一轮复习语法专题--定语从句精选基础练习
高三英语一轮复习语法专题--定语从句精选基础练习 1.（2015·天津）The boss of the company is trying to create an easy atmosphere ______ his employees enjoy their work. A. where B. which C. when D. who 2.I don't like _______ you speak to her. A. the way B. the way in that C. the way which D. the way of which 3.People have the belief ________ factories should produce fewer things from raw materials, ________ the supply is growing smaller and smaller. A. which; that B. which; which C. that; whose D. that; of which 4.（2019?江苏）We have entered into an age ________ dreams have the best chance of coming true. A. which B. what C. when D. that 5.They talked about their classmates and things they still remember in middle school. A. that B. which C. what D. whose 6.Mensa is a society for bright people, and it aims to create a platform ______ many think can provide the chance to share their thoughts and ideas. A. where B. which C. what D. who 7.It was with deep sadness that the House of Chanel announced the passing of Karl Lagerfeld, ________ talent for all the branding campaigns related to fashion it benefited since 1987. A. of which B. whose C. of whom D. from whose 8.The book was written in 1946, ___ the education system has witnessed great changes. A. when B. during which C. since then D. since when 9.It's on the festival occasions the family get together he misses his late father. A. where, that B. which, when C. when, that D. that, when 10.There were moments ______ we had to slow down and give the situation a second thought. A. where B. why C. when D. that 11._____ girls can be _____ .they would like to be, whether it is a pilot or an astronaut, is being accepted all around the world. A. What; whomever B. That; whatever C. If; whoever D. 不填; whatever 12.Wu Lei is the only Chinese player has made it onto the latest World Soccer 500 list. A. that B. which C. whose D. whom 13.The reason ________ he didn't come was ________ he was injured. A. that, because B. why, that C. why, because D. that, that 14.（2017?北京）The little problems ______ we meet in our daily lives may be inspirations for great inventions. A. that B. as C. where D. when
高考英语专题复习定语从句)Word版
定语从句（1） 一、概念 1) 定语从句：在主从复合句中用作定语的从句叫定语从句。定语从句一般紧接在先行词后面，但as引导的修饰全句的定语从句可以放在句首。 2) 先行词：被定语从句修饰的成份。先行词可以为一个词，短语，或整个主句。 3)关系词：引导定语从句的词叫关系词，分为关系代词和关系副词。 关系词的作用： (1) 引导定语从句，连接主句和从句，相当于一个连词； (2) 必在从句中作某个句子成份（可以做主语，宾语，表语，定语，状语）; 常用的关系代词: that、which、 who、whom、whose、as 、but 1. that多指物，有时也指人。在从句中作主语或宾语，有时作表语，作宾语时常省略。 2. which指物，在从句中作主语或宾语，作宾语时常省略。 3. who指人，在从句中作主语或宾语。 4. whom指人，在从句中作宾语，在口语及非正式文体中常省略。 5. whose可指人，也可指物，在从句中作定语。 6. as指人或物，在从句中作主语或宾语。当先行词被the same，as，such等修饰时，多用as 引导。 7. but文语, 置于否定词之后=that/who…not…, "没有……不……", 在从句中作主语，宾语。 二、关系代词引导的定语从句 1) which, that 它们所代替的先行词是事物的名词或代词，在从句中可作主语、宾语等，例如： A prosperity which / that had never been seen before appears in the countryside.（which / that在句中作宾语） The package (which / that) you are carrying is about to come unwrapped. (which / that 在句中作宾语) 2) who, whom, that 这些词代替的先行词是人的名词或代词，在从句中所起作用如下： Is he the man who/that wants to see you?（who/that在从句中作主语） He is the man whom/ that I saw yesterday.（whom/that在从句中作宾语） 3) whose 用来指人或物，（只用作定语，若指物，它还可以同of which互换），例如： Please pass me the book whose (of which) cover is green. 4) 关系代词that和which (1) 不用that的情况： a) 在引导非限定性定语从句时 (错)The tree, that is four hundred years old, is very famous here. b) 介词后不能用 We depend on the land from which we get our food. (2) 只能用that作为定语从句的关系代词的情况 a) 在不定代词，如：anything, nothing, everything, all, much, few, any, little等作先行词时，只用that，不用which。
中考英语一轮复习——定语从句讲解及练习
定语从句的用法和精练 一、定语从句的概念 在复合句中,修饰某一名词或代词的从句叫定语从句。被修饰的名词或代词叫先行词,定语从句一般放在先行词后 二、定语从句的关系词 引导定语从句的关系词有关系代词和关系副词,常见的关系代词包括that, which, who(宾格whom,所有格whose)等,关系副词包括where, when, why等。关系代词和关系副词放在先行词及定语从句之间起连接作用,同时又作定语从句的重要成分。 三、定语从句的分类 根据定语从句与先行词的关系,定语从句可分为限制性定语从句及非限制性定语从句。限制性定语从句紧跟先行词,主句与从句不用逗号分开,从句不可省去。非限制性定语从句主句与从句之间有逗号分开,起补充说明作用,如省去,意思仍完整。 四、关系代词的用法 （一）限制性定语从句中关系代词的用法 1. that 既可以用于指人,也可以用于指物。在从句中作主语或宾语,作主语时不可省略,作宾语可省略。例如: Mary likes music that is quiet and gentle.玛丽喜欢轻柔的音乐。(that作主语) The coat (that) I put on the desk is blue.我放在桌子上的那件外套是蓝色的。(that作宾语) 2.which用于指物,在句中作主语或宾语,作主语不可省略,作宾语可省略。例如: The building which stands near the train station is a supermarket.位于火车站附近的那座大楼是一家超市。(作主语) The film (which) we saw last night was wonderful. 我们昨天晚上看的那部电影很好看。(作
定语从句专项练习(附答案)
) 【定语从句专项练习】 1. Last month, part of Southeast Asia was struck by floods, from _____ effects the people are still suffering. A. that B. whose C. those D. what 2. Mark was a student at this university from 1999 to 2003, __________ he studied very hard and was made Chairman of the Students’ Union. A. during which time B. for which time C. during whose time D. by that time 3. I work in a business ______ almost everyone is waiting for a great chance. A. how B. which C. where D. that ; 4. The English play ________ my students acted at the New Year’s party was a great success. A. for which B. at which C. in which D. on which 5. New York, ________ I visited last year, is a nice old city. A. that B. which C. when D. in which 6. I can think of many cases _______students obviously knew a lot of English words and expressions but couldn't write a good essay. A. why B. which C. as D. where 7. George Orwell, ________ was Eric Arthur, wrote many political novels and essays. A. the real name B. what his real name 。
高三英语 一轮复习 定语从句(一)
高三英语定语从句（一） 一、【知识点】 定语从句：定语从句是由关系代词或关系副词引导的从句，其作用是作定语修饰主句的某个名词性成分，相当于形容词，所以又称为形容词性从句，一般紧跟在它所修饰的先行词后面。 关系词：引导定语从句的关联词称为关系词，关系词有关系代词和关系副词。关系代词有that, which, who, whom, whose, as等；关系副词有where, when, why等。 关系代词（在句中作主语、宾语或定语） 1.who指人在从句中做主语 (1) The boys who are playing football are from Class One. (2) Yesterday I helped an old man who lost his way. 2. whom指人，在定语从句中充当宾语，常可省略。 (1) Mr. Liu is the person (whom) you talked about on the bus. (2) Mr. Ling is just the boy whom I want to see. (3) The man who/whom you met just now is my friend. 如果在从句中做宾语,就用whom或who. 比如: He is the man whom/who I talk to. 如果是在从句中作主语就只能用who. 比如: He is the man who has an English book. 3.which指物，在定语从句中做主语或者宾语，做宾语时可省略 (1) Football is a game which is liked by most boys. (2) This is the pen (which) he bought yesterday. 4. that指人时，相当于who或者whom；指物时，相当于which。 (1) The number of the people that/who come to visit the city each year rises one million. (2) Where is the man that/whom I saw this morning? 5. whose通常指人，也可指物，在定语从句中做定语
人教版高三英语 一轮复习grammar 定语从句(介词+关系代词)练习题
Attributive Clause IV 1. This is the book which/that I’m looking for. 2. It sounded like a train which/that was going under my house. 3. Is there anyone whose family is in Beijing? 4. They have invited me to visit their country, which makes me very happy.. 5. This is the house where he lived. 6. I’ll never forget the days when we played together. 7. A middle-aged woman killed her husband, which frightened me very much. 8. He made the same mistakes again, _____ made his parents very angry. 9. There are many reasons why people like traveling. 介词+which/whom引导的定语从句用于正式场合。在这一结构中，关系代词which/whom做介词的宾语。当先行词是人时，用介词+whom引导定语从句，当先行词是物时，用介词+which引导定语从句 1. This is the gun with which he hunts the wildlife. 2. He’ll never forget the day on which he was admitted to the O lympic Games. 3. A great number of cultural relics have been found in a village in which there are lots of old temples. 4. There have been many popular bands in the world, among which the most famous was the Beatles. 5. Peter went to a concert at which his favorite band played and sang. 6. Luckily, we brought a map without which we would have lost our way. 7. Simon helped Peter repair his guitar, for which he was very grateful. 8. I like songs in which the feelings of love is expressed.
2021届课标版高考英语一轮复习训练：第二部分 专题七 定语从句
专题七 定语从句 题组1 限时模拟 A单句填空 1.[2020安徽皖南八校联考,61]In the morning, two artists, acting skills were wonderful, came to our school as planned. 2.[2020山西太原阶段性测评,70]There were sixty-six unprovoked(无端的)shark bite incidents around the world in 2018,only six of were dangerous, according to the ISAF. 3.[2020山东省实验中学第二次诊断,64]Still, when you start your journey of positive thinking, you shall meet wonderful new people, with you can share positive attitudes. 4.[2020广东惠州高三第二次调研,69]This famous scientist then remarked that it was at that moment that he knew he didn’t need to be afraid to make mistakes were actually opportunities for learning something new. 5.[2020广东六校联考,64]One of China’s six famous tea types is white tea, gets its name from its silver-white color. 6.[2020辽宁五校协作体联考,62]In China, a teahouse is a place people gather to enjoy tea, chat and socialize. 7.[2020江西南昌重点中学高三段考,67]Power walking uses both upper and lower body strength, results in stronger muscles and bones. 8.[2020陕西部分学校摸底检测,65]Researchers followed a group of people attended free weekly singing workshops for six months. 9.[2020四川绵阳第一次诊断性考试,62]It cannot cover all Li endured to reach the top of the tennis world. 10.[2020河南三门峡高三月考,41]It seems to be something in our blood makes us want to conquer (征服)things by climbing them. 11.[2020河南中原名校第三次质量考评,66]"The textbook focuses not only on basics of AI, but also on practical use of AI in daily life," said Chen Yukun, a professor at East China Normal University, is also a contributor to the book. 12.[2020湖南师大附中高三摸底考试,48]In a culture people function according to ritual, music is used to help govern them. 13.[2019河北邯郸九校高三第一次联考,66]What’s worse, to those spend too much time watching TV, it can be harmful to their eyesight and health. 14.[2019江苏无锡高三调研,48]"Ungelivable" is such a new English word coined on the Internet is forbidden to appear in official media or documents at present. 15.[2019江苏南通中学模考,11]There has been positive reaction to the proposal to help the disabled, the impact of will be lasting especially for the young. 16.[2019江苏启东中学高三检测,10]The Tang Dynasty is generally considered to be a golden chapter by people worldwide, the Chinese civilization influenced many neighboring countries. B单句改错 17.[2020安徽示范高中名校联考]There are many different tea sets and almost all kinds of tea in his home, most of that I can’t name.
英语定语从句专项训练100(附答案)
英语定语从句专项训练100(附答案) 一、定语从句 1．–Why are you so worried? -I’ve lost the watch ______ my dad bought me on my birthday. A．what B．who C．whose D．which 【答案】D 【解析】 【分析】 【详解】 句意：——你为什么如此担心？——我把那块我生日时爸爸买给我的手表弄丢了。考查定语从句，先行词是watch表示物，故关系代词只能用which或that；what不引导定语从句；who的先行词是人；whose表示所属；故选D。 2．That was his first invention. It was a machine ________ clothes. A．that used to wash B．which was used to washing C．which got used to washing D．that was used to wash 【答案】D 【解析】 【详解】 句意：那是他的第一个发明。那是一台用来洗衣服的机器。本题考查的是be used to do sth. “被用于做某事”的用法，而不是be/get used to doing sth. “习惯于做某事”的用法，排除 B/C；再由That was his first invention.可知，本题是过去时，因此在that引导的定语从句中，应该用一般过去时的被动句。was used to wash被用来洗衣服，语境是：那是一台被用来洗衣服的机器。故选D。 3．The leaders from eight countries attended the Shanghai cooperation organization summit in Qingdao got the welcome of the Chinese people. A．whom B．what C．who D．which 【答案】C 【解析】 【详解】 句意：出席上海合作组织青岛峰会的8国领导人受到中国人民的欢迎。考查关系代词辨析。what不是关系词，可排除。whom和who都用于先行词是人时，但whom用作宾语，who用作主语或宾语；which用于先行词是物时。本句先行词The leaders是人，可排除which；关系词在从句中做主语，可排除whom。根据句意结构和语境，可知选C。 4．– Do you like the weekly talk show The Readers on CCTV? –Sure. It’s a great TV program can develop the habit of reading.
一轮复习定语从句
高三一轮复习语法-----定语从句 Ⅰ.定语从句的基本知识： 1.定义：在句中起__________的作用、修饰句子中的_______或______的从句。 其作用相当于形容词，所以也叫___________________. 2.先行词：被定语从句修饰的名词、代词称为先行词。 先行词在从句中充当_____、______、_______、______、_____. 3.关系词： 引导定语从句的关联词称为关系词，关系词有________和_________。 关系代词有______, ______, ______, ______, _____, ______等； 关系副词有_______,_______, ______等。 关系词常有3个作用： ①连接作用，引导定语从句。 ②代替主句中的先行词，甚至可能是主句中的一部分或者整个主句。 ③在定语从句中充当句子成分。 3.分类：定语从句分为_________________和____________________. Ⅱ. 分析下列定语从句，指出其先行词，关系词及其所充当的句子成分。 1. She is a girl whom people like at first sight. _________________________________ 2. They rushed over to help the man whose car had broken down. __________________ 3. Tom did well in his exam, which was a big surprise. ___________________________ 4. The reason why I don’t trust him is that he often tells lies. _______________________ 5. This is the factory in which he works. _______________________________________ 定语从句考点归纳： 考点清单一：关系代词与关系副词的使用区别： 1. I still remember the day _______ I first came to Beijing. 在句中做_______ 语 2. I still remember the day ______ I spent in Beijing. 在句中做_______ 语 3. This is the house _______ I lived 2 years ago. 在句中做_______ 语 4. This is the house _______ I bought 2 years ago. 在句中做_______ 语 5. The reason______ he was late is that his car broke down. 在句中做_______ 语 6. The reason______ he gave us is not reasonable. 在句中做_______ 语 考点清单二：先行词是物时，关系代词that与which的区分 ⊙不定序数最高级，有人有物有疑问词，only, very, right来修饰，还有作表语是特例。Eg. Who is the boy that was here just now? China isn’t the country that it used to be. ⊙Mary was much kinder to Jack than she was to the others, ______ made all the others upset. A. who B. which C. what D. that
高考英语定语从句知识点知识点总复习含答案(1)
高考英语定语从句知识点知识点总复习含答案(1) 一、选择题 1．The man took out a knife and made a mark ____ his sword was dropped, confusing the passengers on board. A．from where B．what C．on which D．where 2．The book tells stories of the earthquake through the eyes of those lives were affected A．whose B．that C．who D．which 3．The president of Harvard pioneered the elective system______ students were able to choose their own courses of study. A．on which B．about which C．to which D．by which 4．5G is an exciting mobile technology, ________ will give a massive boost to smart cities and vehicles. A．where B．when C．that D．which 5．—How did you find your way here？ —It was by following the travel brochure _____ the route is clearly clarified. A．that B．how C．where D．which 6．My brother bought a telescope, ______ he could study the star in the night sky. A．of which B．through which C．in which D．on which 7．Liberty, equality, and fraternity are the ideals _______ human beings have been fighting. A．to which B．against which C．with which D．for which 8．Companies should understand the risks _______ they are exposed and monitor their control environments adequately. A．on which B．in which C．to which D．with which 9．All of us were so excited at the news ____we’ll go abroad for holidays ___we jumped with joy. A．that; that B．what; and then C．what; that D．which; so 10．She brought with her three friends，none of ________ I had ever met before. A．them B．who C．whom D．these 11．People often turn to china https://www.360docs.net/doc/e11317852.html,_____they’ll find valuable information regardin g everything they’ll be or are going through. A．which B．where C．when D．why 12．Try to be a responsible school by not allowing anyone to attend class, ________ has had a fever. A．who B．which C．as D．that 13．Allen is good at seizing every opportunity ____ he thinks he can show his best self to others. A．when B．that C．where D．which 14．We won’t forget the heroes ________ lost their lives while fighting against a forest fire. A．who B．whose C．when D．why 15．You were really between a rock and a hard place ______ you had to choose between your career and your relationship. A．when B．where C．before D．until