◎ 题干
We all know that it is very kind ______ him ______ us.
[      ]
A. for…to help
B. of…to help
C. for…helping
D. of…helps
◎ 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“We all know that it is very kind ______ him ______ us. [ ]A. for…to helpB. of…to helpC. for…helping D. of…helps …”主要考查了你对  【不定式】【介词】  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。