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  • 科目:英语
  • 题型:单选题
  • 难度:较易
  • 人气:1202

—Look! Someone        the floor. It looks quite clean now.
— I guess Tom did it for he was on duty today.
A. is sweeping     B.was sweeping     C. has swept

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—Look!Someonethefloor.Itlooksq