16. If it had not been for her help, the police_____in solving the mystery in such a short time.

A. can’t succeed　　　　　　　 B. mustn’t have succeeded 　

C. couldn’t succeed　　　　　 D. couldn’t have succeeded

15. When I lived with my roommates in university, we______often talk into the night.

A. might　　 B. could　　 C. should　 D. would

14. Mr and Mrs Scott prefer a trip in a small town to ____in so large a city as New York.

A. this　　 B. one　　 C. it　　 D. that

13. ----Is there any possible way to help them get rid of such a bad habit?　　　　　　　　

----To tell the truth, it is very hard. But we _____on this problem.

A. worked　　 B. had worked　　 C. are working　 D. had been working

12. Not until quite recently _____that language is closely related to culture.

A. he realized　 B. did he realize　 C. had he realized　 D. he did realize

11. Every student as well as teachers who_______to visit the museum____asked to

be at the school gate on time.

A. is; is　 B. are; are　 C. is; are　 D. are; is 　

10. I want to study modern American literature. Can you ___me some books on the subject?

A. recommend　 B. substitute　 C. explain　　 D. declare

9. -----Have you heard that he was admitted into Beijing University?

-----Is that true? I’m glad that his efforts at last______.　　　　　　　　　　　　　　　　　　 　

A. worked out　　 B. paid off　 C. turned out　 D. paid for

8. He is a policeman, easily ____ by his uniform.

A. marked　　 B. distinguished　 C. watched　 D. seen

7. My sister was against my suggestion while my brother was____it.

A. in favour of　 B. in memory of　 C. in honour of　 D. in search of