The old lady didn’t know when the house caught fire.A.how to doB.how to do with itC.what to doD.what

题目简介

The old lady didn’t know when the house caught fire.A.how to doB.how to do with itC.what to doD.what

题目详情

The old lady didn’t know         when the house caught fire.
A.how to doB.how to do with itC.what to doD.what to do it
题型:单选题难度:偏易来源:不详

答案

C
考查疑问词+不定式作宾语。此题中what+to do形成固定短语做know的宾语。句意:当她的房子着火的时候这位老妇人不知道做什么。所以选C。

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