题目

It is because English is very useful_____
A.at which we work hard B.that we work hard at it
C.which we work hard at D.wjich we work hard

提问时间：2020-06-25

答案

B 吧..这个句子是强调句啊!It is because English is very useful that we work hard at it.[强调句：It is/ was + 被强调部分（通常是主语、宾语或状语）+ that/ who（当强调主语且主语指人）+ 其它部分.]强调句还...