40.I can’t find Mr Wang anywhere in the office building.Where____he have gone?

　 A.may　 　　　　　　 　　　　　　　C.must　 　　　　　　　D.Should

39.Professor Wang,many students want to see you. _____they wait here or outside?

　 A.Do　 　　　　　　B.Are　 　　　　　　　C.Will　　 　　　　　　D.Shall

38.-------Look ,it_____be Li Ping.

　 ------No,it____be him.He’s gone abroad.

　 A.may;mustn’t　 　　B.must;may　 　　　　C.must;can’t　 　　　　;may not

37.If you_____quiet ,I’ll tell you what happned

　 A.be　　　 　　　　　B.will be　 　　　　　C.are　 　　　　　　　D.are to be

36.-------Do you speak Japanese?

　 　-------No,I don’t , but I_____speak Chinese.

　 A.ought　　 B.have to　　 C.do　　 D.must

35. The teacher told the students that they ________ keep silent in class all the time.

　 A. ought to not　　　　　 B. ought not to　　　　　　　　 C. ought not to have　　　 D. can't

34. You _________ me about it earlier, but you didn't.

　 A. should have told　　　　 B. would have told　　　　　 C. must have told　　　　 D. should tell

33.1 didn't hear the phone. I _________ asleep.

　 A. must be　　　　 B. must have been　　　　 C. should have been　　　 D. could have been

32. -------"________ you mind my opening the window?"　　　　　　　　

　 --------"Not at all. "

　 A. Shall　　 　　　　　 B. Should　 　　　　 C. Will 　　　　 　　D. Would

31. A computer ________ think for itself; it ________ be told what to do.

　A. may not, must　　　　 B. mustn't, might　　　　　　　 C. shouldn't, could　　　　 D. can't, must