John does important research _______ the best ways to help the old.A.findsB.findsC.foundD.to find ou

题目简介

John does important research _______ the best ways to help the old.A.findsB.findsC.foundD.to find ou

题目详情

John does important research _______ the best ways to help the old.
A.findsB.findsC.foundD.to find out
题型:单选题难度:中档来源:不详

答案

D

试题分析: 句意:John做了一个重要的调查为了找到帮助老人最好的办法。用不定式表示目的。find out找到,发现。故选D。

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