命题点二：从属连词

　　1.(2018重庆A卷)Chen Wei isn't at school today________ he is taking a robot competition in Shanghai.

　　A. so B. becauseC. before D. if

　　2.(2018重庆B卷)Our Chinese teacher didn't go to bed ________ hefinished his work last night.

　　A. if B. untilC. since D. because

　　3.(2018河南)A stupid man tells a woman to shut up,while a wise man tells her that her mouth is quite beautiful ________ it is closed.

　　A. unless B. since

　　C. when D. though

　　4.(2018安徽)Our world will get better and better________ each of us lives a greener life.

　　A. before B. if C. though D. until

　　5.(2018山西)I am really proud of my group ________ we're alwaysdiscussing and sharing study secrets together. How important the group work is!

　　A. because B. though 　C. unless

　　6.(2018广东)The traffic policeman took away Jim's driver'slicense________he broke the traffic rules of drunk driving.

　　A. though B. because C. till D. and

　　7.(2018哈尔滨)Your hearing will be badly hurt ________ you always listen to music by earphone(耳机)．

　　A. whether B. where 　C. if

　　8.(2018青海)You will succeed finally ________ you give up halfway.

　　A. if B. unless 　C. even though

　　9.(2018长沙)—Did you win the game yesterday?

　　—Not really.________ we all tried our best,we lost it.

　　A. If B. Though 　C. Unless

　　10.(2018绥化)She is listening to music ________ he is doing hishomework.

　　A. after B. before 　C. while

　　11.(2018苏州)To make your DIY work perfect,you'd better not start________you get all the tools ready.

　　A. when B. while C. before D. after

　　12.(2018济宁)We have been expecting Rio2018Olympics ________the Olympic flame(圣火)was lit.

　　A. if B. unless C. since D. though

　　13.(2018来宾)—Jack didn't go to bed ________ 12 o'clock last night.

　　—That's why he was late for school this morning.

　　A. until B. for C. to D. at

　　14.(2018宜宾)It's already tens of years________ the world's population reached five billion.

　　A. before B. after　C. since

　　15.(2018巴中)—Will you help me with the trouble?

　　—I won't do________ you tell me the truth.

　　A. if B. unless 　C. since

　　16.(2018随州)—I really want to join the square dance. Can I learn the dance well?

　　—Yes, Mom!Nothing is impossible ________ you put your heart into it!

　　A. as long as B. as soon as

　　C. even if D. unless

　　17.(2018宜昌)—Learning to love is like learning to walk.

　　—Yes,________ we step out bravely,we'll find it's not so difficult.

　　A. as if B. even though

　　C. as long as D. as far as

　　18.(2018十堰)—We will fail the exam ________ we study hard.

　　—That's why we are trying our best to prepare for the exam.

　　A. until B. when C. unless D. how

　　19.(2018临沂)________ American people and British people speak the same language,their cultures are quite different.

　　A. Since B. If C. Although D. Because

　　20.(2018绵阳)—How do you like the concert given by EXO?

　　—Exciting, ________ one piece of the music wasn't played quite well.

　　A. though B. because C. so D. and