5、　 There are many computer_____________(病毒).

4、　 Someone has ___________(偷)my watch.

3、　 I don’t get many ____________(机会)to talk to her.

2、　 I keep my ___________ ____________ (零用钱) in the bank.

1、　 Your shoes are dirty.Please __________ ___________ _________(脱下它们).

40. I have to work this afternoon,__________ I? A. don’t　　 C, haven’t　　 D. do

　KEY.　　 1--10 ACDCB BBAAA 11-20 BDACC ADADC

21-30 BCABC ADCAB 31-40 ABDAB ADBDC

39. We need to practice speaking English more often, ___________ we?

　 A. mustn’t　 B. needn’t　　 C. can’t　　 D. don’t

37. We mustn’t be late, __________ we?

　 A. must　　 B. may　　 C. are　　　 D. A&B

38, I needn’t show her the keys to the question, ________ I?

　 A. must　　 B. need　　 C. can　　 D. do

36. She must have arrived there yesterday, __________ she ?

　 A. didn’t　　 B. hasn’t　　 C. needn’t　 D. mustn’t

35. You must have studied English for many years, _________ you?

　 A. didn’t　 B. haven’t　　 C. needn’t　　 D. mustn’t