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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 477

—Did you know ______ just now?
—Their plane didn't take off on time because of the thick fog.

A.what did they happen B.what happened to them
C.what they happened D.what they have happened
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—Didyouknowjustnow?—Theirplane