Hespentallhisfreetimehehas__

发布时间：2020-07-28 08:03:44

He spent all his free time he has ________ his classmates．A.to helpB.helpedC.helpingD.help

网友回答

C解析spend some time/money(in)doing sth．意为“花费时间或金钱做某事”。该句中he has为定语从句，修饰前面的free time。
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