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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1799

They were abroad during the months when we were carrying out the investigation, or they _____ to our help.

A.would have come B.could come C.have come D.had come
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Theywereabroadduringthemonthsw