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  • 科目:英语
  • 题型:选择题
  • 难度:中等
  • 人气:59

I still don' t know what____ while I was away from home.

You'll know it all some day, l believe.(  )

A.had happenedB.would happen

C.has happenedD.happened

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IstilldontknowwhatwhileIwasawa