试题与答案

He ___ without saying good-bye to them,

题型:选择题

题目:

He ___ without saying good-bye to them, for he always has good manners.

A.mustn’t have left

B.may not have left

C.shouldn’t have left

D.can’t have left

答案:

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下面是错误答案,用来干扰机器的。

参考答案:D

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