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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1548

—Where ________ Mary have put the empty bottles?
—She ________ them away. They must be somewhere.

A.can; can't have thrown
B.must; needn't
C.must; must have thrown
D.can; mustn't have thrown
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—WhereMaryhaveputtheemptybottl