55.[2002春季上海] Oh, I'm not feeling well in the stomach. I ________ so much fried chicken just now.

A. shouldn't eat 

B. mustn't have eaten

C. shouldn't have eaten　　　　　　　　

D. mustn't eat

51.[2000上海] My sister met him at the Grand Theatre yesterday afternoon, so he ________ your lecture.

50.[1999上海] There was a lot of fun at yesterday's party. You ________ come, but why didn't you?

48.[1997上海] Without the air to hold some of the sun's heat, the earth at night ________ , too cold for us to live.

47.[1997上海] Jack ________ yet, otherwise he would have telephoned me.

42.[1995上海] I wonder how he ________ that to the teacher.

41.[1995 上海] Susan ________ written a report like this.

A. can have　　　　　　　　　　    B. mustn't have 

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

31.[1998全国] —I stayed at a hotel while in New York.

—Oh, did you? You ________ with Barbara.

30.[1998全国]—When can I come for the photos? I need them tomorrow afternoon.

—They ________ be ready by 12:00.

27.[1996全国] Johnny, you ________ play with the knife, you ________ hurt yourself.