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60.Be sure to write to us,_____?

　 A.will you　　 　　B.aren’t you　 　　　　 you　 　　　　D.mustn’t you

59.I didn’t hear the phone ,I_____asleep.

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

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