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15. We’ll have a picnic in the park this Sunday _____ it rains or it’s very cold. (天津卷)

　 A. since　　　 B. if　　　　 C. unless　　　　 D. until

14. I’m sorry you’ve been waiting so long, but it’ll still be some time ____ Brian gets back. (北京卷)

A. before　　　 B. since　　　 C. till　　　　　　 D. after

13. -Did you return Fred’s call? (北京卷)

　 -I didn’t need to ____ I’ll see him tomorrow.

　 A. though　　　　　 B. unless　　　 C. when　　　　　　 D. because

12. Don’t promise anything ______ you are one hundred percent sure. (浙江卷)

A. whether　　　 B. after　　 C. how　　 D. unless

11. There were some chairs left over _____ everyone had sat down. (四川卷)

　 A. when　　　　 B. until　　　　 C. that　　　 D. where

10. A small car is big enough for a family of three ____ you need more space for baggage. (全國(guó)II)

A. once　　 B. because　　　　　　 C. if　　　　　　 D. unless

9. I used to love that film ______ I was a child, but I don’t feel it that way any more. (遼寧卷)

A. once　　　　　　　　　　　　　 B. when　　　　 　 C. since　　　　　　　　　　　　　 D. although

8. ______ hungry I am, I never seem to be able to finish off this loaf of bread. (遼寧卷)

A. Whatever　　　　　　 B. Whenever　　　　　　　　 C. Wherever　　　　　　　　 D. However

7. You’d better not leave the medicine ______ kids can get at it. (山東卷)

A. even if　　　　　　　　 B. which　　　　 　 C. where　　　　　　　　 D. so that

6. He found it increasingly difficult to read, ______ his eyesight was beginning to fail. (山東卷)

A. though　　　　　　　　 B. for　　　　　　　　　　 　 C. but　　　　　　　　　　　　　　 D. so