◎ 题干
Our classroom is very clean. Do you know who___cleaned it?
A.was it thatB.it was that C.was it whoD.he was
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“Our classroom is very clean. Do you know who___cleaned it? A.was it thatB.it was that C.was it whoD.he was…”主要考查了你对  【人称代词】【相互代词】【疑问代词】【关系代词】  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。