◎ 题干
--Who helped you clean the classroom yesterday?
--            . I cleaned it all by myself.
A. Somebody       B. Nobody       C. Everybody
◎ 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“--Who helped you clean the classroom yesterday? -- . I cleaned it all by myself. A. Somebody B. Nobody C. Everybody…”主要考查了你对  【人称代词】【物主代词】【it的用法】  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。