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  • 科目:英语
  • 题型:单选题
  • 难度:中等
  • 人气:306

—Can you tell me if Tom has finished his homework?
—I've no idea. He ________ it this morning.

A.has being doing B.had done
C.is doing D.was doing
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—CanyoutellmeifTomhasfinishedh