31. I had no idea when and where ________. .

A. it happened　　　　　　　　　　 B. does it happen

C. it had happened　　　　　　　　　 D. had it happened

30. He insisted that we ________ rest until we finished the work.

A. not　　　　 B. don’t　　　 C. can’t　　　　 D. should

29. I want to _______ a question to the chairman but in a moment I lost my nerve

A. ask　　　　　 B. reply　　　　 C. rise　　　 D. raise

28. What do you think of his proposal _______ we ________ a play at the English party?

A. what; put up　　　　　　　　 B. that; put on

C. which; put up　　　　　　　　 D. that; put off

27. I’m very sorry, I really don’t _________ you.

A. mean harm　 B. mean to harm　 C. mean harming　 D. mean to be harmed

26. I’ll never trust such a man ______ you described. 　

A. that　　　　 B. what　　　 C. whoever　　　 D. as

25. ------- What do you think of Harry, our new roommate?

------- I am not sure, but he is always asking ______ questions.

A. a great many of　 B. a great many　 C. a great number　 D. a large amount of

24. I’m told that you are going to Canada to have a three-month further study. Don’t let such a good chance to improve your English _____ through your fingers.

A. ski　 B. spread　 C. slip　　 D. skip

23. Many students listened to the lecture, but I wondered how much they ______.

A. took out　　　　 B. took up　　　　 C. took off　　　　　 D. took in

22. The police looked into the case carefully and found the thief had entered the house ______ a ladder.

A. by the means　　 B. by all means　　 C. by ways of　 D. by means of