问题标题:
【()Moreandmoreyoungpeoplearetryingtodosomething_____theold.A.servedB.toserveC.serveD.serves讲解原因】
问题描述:
()Moreandmoreyoungpeoplearetryingtodosomething_____theold.
A.servedB.toserveC.serveD.serves讲解原因
石延平回答:
B.toserve动词不定式表示目的,做某事的目的是服务老人.
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