题目内容

Jack________yet, otherwise he would have telephoned me.

A. mustn’t have arrived                 B. shouldn’t have arrived

C. can’t have arrived              D. needn’t have arrived

 

答案:C
提示:

C项为 “不可能已到……”,对过去发生动作的推测;B项 “不应当已到”;D项为 “不必已到”。

 


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