15.　 Pop music is such an important part of society ____ it has even influenced our language.

A. as　　 B. that　 C. which　 D. where (2007年北京卷)

14.　 Leave your key with your neighbor ____ you lock yourself out one day. (2007年北京卷)

　 A. ever since　 B. even if　 C. soon after　 D. in case

13. ---Where’s that report? (2007年北京卷)

　 ---I brought it to you _____you were in Mr. Black’s office yesterday.

　 A. if　 B. when　 C. because　 D. before

12. I won't tell you, _____ something unexpected happens. (2007年全国I )

　 A. unless　 B. whether　 C. because　 D. while

11.　 He was told that it would be at least three months _____he could recover and return to work. (2007年江西卷)

A. when　 B. before　 C. since　 D. that

10.　 You will be successful in the interview ____ you have confidence. (2007年福建卷)

A. before　 B. once　 C. until　 D. though

9.　 The village has developed a lot _____ we learned farming two years ago. (2007年福建卷)

A. when　 B. which　 C. that　 D. where

8. Most birds find it safe to sleep in the trees, but ____ they have eggs or young children, they don't use a nest. (2007年湖南卷)

　 A. why　 B. how　 C. unless　 D. where

7. _______, his idea was accepted by all the people at the meeting. (2007年重庆卷)

　 A. Strange as might it sound　　 B. As it might sound strange

　 C. As strange it might sound　　 D. Strange as it might sound

6.　 My parents live in a small village. They always keep candles in the house ______ there is a powercut. (2007年重庆卷)

A. if　　 B. unless　 C. in case　 D. so that