He must have been punished yesterday by his parents for what

问题描述：

He must have been punished yesterday by his parents for what he had done.___ he?
A,mustn't B.wasn't C.didn't D.needn't
1个回答 分类：英语 2014-11-08

问题解答：

我来补答
B must have done 表示推测,反义疑问句变后面动词的反义疑问句,由yesterday判断是过去时态,看到 been done明显是被动语态,所以选B
 
 
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