"He ________ without saying goodbye to them, for he always has good manners ."
A.mustn'thaveleftB.maynotleaveC.shouldn'thaveleftD.can'thaveleft...
A. mustn't have left
B. may not leave
C. shouldn't have left
D. can't have left 展开
B. may not leave
C. shouldn't have left
D. can't have left 展开
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