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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 603

They must have been enjoying themselves there, or they _____ so long.

A.can’t have stayed B.wouldn’t have stayed
C.needn’t have stayed D.couldn’t stay
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Theymusthavebeenenjoyingthemse