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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 850

— What were you doing when we were playing basketball yesterday afternoon?
— I ______ the classroom.

A.was cleaning B.have cleaned
C.will clean D.clean
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—Whatwereyoudoingwhenwewerepla