◎ 题干
—Look! Someone ________ the floor.
—Well, it wasn't me. I went shopping just now.
A.had swept B.has swept
C.was sweeping D.is sweeping
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“—Look! Someone ________ the floor.—Well, it wasn't me. I went shopping just now.A.had sweptB.has sweptC.was sweepingD.is sweeping…”主要考查了你对  【现在完成时】【现在完成时的被动语态】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。