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________ important ______ us to listen carefully in class!

A.That’s; of        B.It’s; for          C.This is; for         D.It’s; of

 

【答案】

B

【解析】

试题分析:强调句式, It is adj for sb to do sth,做某事对某人来说怎么样。本句中it是形式主语,指代后面不定式内容做形式主语,this和that无此用法,结合语境可知选B。

考点:固定句式

点评:固定句式的考查也是英语考查的一个重点,熟记这些句式可以减少答题中的分析判断时间,所以平时加强句式记忆也是学好英语的关键环节。

 

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