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题型:单选题 题类:模拟题 难易度:普通

江苏省连云港市2018届九年级下学期英语全真模拟(六)

—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 D、swept
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