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英语
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He must have learn English for three years,___?
A.hasn't heB.haven't heC.mustn't heD.didn't he
要理由,谢谢
人气：174 ℃ 时间：2019-10-28 17:31:55
解答
a 只有当主语为第一人称时,反义疑问才能用情态动词
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