◎ 题干
—Where`s Mary now? Do you know?
—No, but I heard _____ in her room a few minutes ago.

[     ]

A. her singing
B. her sing
C. she was singing
D. all the answers are right
◎ 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“—Where`s Mary now? Do you know? —No, but I heard _____ in her room a few minutes ago. [ ]A. her singing B. her sing C. she was singing D. all the answers …”主要考查了你对  【宾语从句】  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。