[题目]She has some trouble out the math problem.A. work B. to work C. working D. Works 题目和参考答案——青夏教育精英家教网—

题目内容

【题目】She has some trouble _____ out the math problem.

A. work B. to work C. working D. Works

【答案】C

【解析】

试题分析：句意：在解这道数学难题上他有一些问题。根据动词短语have some trouble in doing sth表示在做……方面有问题。结合句意，故选C

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