The students volunteer their time the old man.A. help B. helps C. to help D. helping C [解析]句意:这些学生志愿花时间来帮助这个老人.根据volunteer to do志愿做某事,不定式做宾语,故选C 题目和参考答案——青夏教育精英家教网—

题目内容

The students volunteer their time the old man.

A. help B. helps C. to help D. helping

C 【解析】句意：这些学生志愿花时间来帮助这个老人。根据volunteer to do志愿做某事；不定式做宾语；故选C

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