31. This is not an economical way to get more water; ________, it is very expensive.

　　　 A. rather than　　　 　 B. on the other hand　　　 C. in a word　　　　　 D. on the contrary

30. If you want to see the chairman of the department, you’d better make an _______ with his secretary first.

　　　 A. admission　　　　　　 B. agreement　　　　　 C. appointment　 　　D. assumption

29. -Where did you find your deskmate Tom?

　　- It is in the library _______ he studied.

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

28. -Did you watch the basketball match yesterday?

-Yes, I did. You know, my brother ______ in the match.

　　　 A. is playing　　　　　 B. had played　　　　　　 C. was playing　　　　 D. has played

27. -Oh my God! You__________ wear slippers to attend the conference．

　　 -I'm sorry I forgot there is a conference．

　　　 A. must　　　　　　　　　 B. can　　　　　　　　　　　 C. should　　　　　 D. shall

26. The truck ran down the hill, and the driver _________, according to the local newspaper, to have been killed.

A. was reported 　 　B. was reporting　　 C. reported　 　　　 　　　D. had been reported

25. ______ your blog, I would have written back two days ago.

A. If I read 　 　　　　　　　　　　　　　　　 B. Should I read

C. Had I read　 　　　　　　　　　　　　 D. If I could have read

24. His proposal is _______ to all of us and you do not need to tell us more about it.

　　　 A. apparent　　　　　 B. practical　　 　　 　　　 C. reasonable　　　 　　　 　 D. abrupt

23. We got lost in the forest and decided to remain __________we were and waited for rescue.

　　　 A. where 　　　　　 B. what 　　　　　　　 C. how　　　　 　 D. who

22. “In no condition ____ you are a Chinese.” Dad told me before I went abroad.

　A. you should forget　　　　　　　　　　　　　　　 B. forget you

　C. shouldn’t you forget　　　　　　　　　　 　　　　　　 D. should you forget