58.We_____last night ,but we went to the concert instead.
A.must have studied B.might study C.should have studied D.would study
57..A computer____think for itself ; it must be told what to do.
’t B.couldn’t C.may not D.might not
56.Where is my pen?I_____it.
A.should have lost B.must have lost C.would have lost D.might lose
55._____you be happy!
B.May C.Must D.Would
54.There used to be a church in the east of the town,_____?
A.didn’t there B.usen’t to there C.used there D.usedn’t to there
53.No one _____that to his face.
A.dare say B.dare to say C.dares saying D.dares said
52.Your coat is dirty,_____it for you?
A.Am I washing B.Will I wash C.Am I going to wash D.Shall I wash
51. You must be fifty, ________?
A. mustn't you B. needn't you C. aren't you D. mnyn't you
50. Since the ground is white, it _________ last night.
A. had snowed B. must have snowed C. must be snowing D. must have been snowing
49. They _________ the plane, or perhaps they have been prevented from coming for some reason.
A. can have missed B. may have missed C. can have lost D. may have lost