◎ 题干
—Mary can't help you _______ the house. Why?
—Because she is busy _______ a hotel reservation.

[     ]

A. to clean; making
B. cleaning; making
C. cleaning; to make
D. to clean; to make
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“—Mary can't help you _______ the house. Why? —Because she is busy _______ a hotel reservation. [ ]A. to clean; making B. cleaning; making C. cleaning; …”主要考查了你对  【不定式】【动名词】  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。