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he must have read this book yesterday?反问?did not he?have not he?为什么

题目详情
he must have read this book yesterday?反问?
did not he?have not he?为什么
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答案和解析
didn't he
这类题目要不能光看must后的单词,因为句中有yesterday,所以是过去式,前面肯定,后面否定,就是didn't he 了