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【题目】—It's clever _____ you to help me work out this difficult maths problem. Thanks.
—You are welcome. Now it's easier ______ you to understand it.
A.of; of
B.of; for
C.for; of
D.for; for

【答案】B
【解析】句意:——你帮我算出这道难题,你真是太聪明了,谢谢。——不用谢。现在对你来说,理解这道题更容易了。It's +adj+of sb to do sth。做某事,某人是.......样的。在这个句型中,形容词修饰人。It's +adj+for sb to do sth.对于某人来说,做某事是.....样的。在这个句型中,形容词修饰事物。故选B。

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