【題目】People kept find some ways solve the problem.

A.trying to; of B.try to; of

C.try to; to D.trying to; to

【答案】D

【解析】試題分析：句意：人們一直在尋找解決問題的方法。keep doing sth堅持做某事，一直做某事；try to do sth努力做某事，設(shè)法做某事；a way to do sth做某事的方法。所以選D。

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