◎ 题干
Mother asked Tom _____ the room now.

A. clean
B. cleaning
C. to clean
D. be cleaning
◎ 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“Mother asked Tom _____ the room now. [ ]A. clean B. cleaning C. to clean D. be cleaning …”主要考查了你对  【不定式】  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。
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