65._________A. necessityB. mustC. needD. had

【C9】______A．mayB．mustC．canD．will

Since the weather is fine we ______walk for a while.A．mayB．mustC．might as wellD．will

The manager gave her his word that her complaint______be investigated soon.A．willB．mustC．s

The work______ be completed before this weekend.A、oughtB、mustC、had better toD、should to

_________(59)A.have to B.mustC.should D.need

65._________A.have B.must C.should D.had