She looks very sad. I want to help her , but I just don’t know_________ to do.A.whatB.whenC.howD.whe

题目简介

She looks very sad. I want to help her , but I just don’t know_________ to do.A.whatB.whenC.howD.whe

题目详情

She looks very sad. I want to help her , but I just don’t know_________ to do.
A.whatB.whenC.howD.where
题型:单选题难度:中档来源:不详

答案

D
“疑问词 + 动词不定式”是英语中常用的一种结构。在句中可以作主语、动词或介词的宾语以及表语。what 什么; when 什么时候;how怎样;where在哪儿。句意:她看起来很伤心。我想帮助她。但是我只是不知道怎么帮。故选D。

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