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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
  • 浏览 1507

Only then, _____we ____that the trapped miners were in danger when the flood water dripped into the tunnels.

A.have; realized B.did; realize
C.do; realize D.had ; realized
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Onlythen,wethatthetrappedminer