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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
  • 浏览 985


. He had already learned the news. I ______ the trouble to phone him about it.

A.needn't have taken B.could have taken
C.should have taken D.mustn't have taken
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.Hehadalreadylearnedthenews.It