题目内容

Volunteering our time to help people ________ a good way to _______our free time.

A. be; spend B. are; cost C. is; spend D. will; cost

 

C

【解析】

试题分析：句意：花时间志愿帮助别人是我们花费空闲时间的好方法。Volunteering our time to help people是动名词做主语，说的是花时间志愿帮助别人这件事情，是第三人称单数，要用is,spend花费，人作主语，cost花费，物作主语，结合语境可知选C。

考点：考查动词辨析。

 

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