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  • 科目:英语
  • 题型:单选题
  • 难度:较难
  • 人气:839

—It is a mystery and a shock to all who knew him that he____ have taken his own life in this way.
—What a pity, indeed.

A.must B.may C.can D.should
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—Itisamysteryandashocktoallwho