Isn't it very kind your parents to do that for us?A. for B to C. about D. of

发布时间：2020-08-15 00:21:09

Isn't it very kind      your parents to do that for us?
A. for          B to            C. about          D. of  

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解析： 本题是固定用法的考查。It is+形容词+of／for+sb．+t0 do是固定的句型。但两个句型用法不同，如果形容词表示人的性质，如kind，nice等必须用of。
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