_______ to say which one I should choose.A．That’s hardB．It is hardC．There no us

题型：不详难度：来源：

_______ to say which one I should choose.

A．That’s hard

B．It is hard

C．There no use

D．It no good

答案

解析

it 作形式主语，后面的不定式短语作真正的主语。

举一反三

______ will take you a lot of time to find him in the crowd.

A．It

B．I

C．We

D．They

题型：不详难度：| 查看答案

He felt ______ to work for human rights and progress.

A．it his duty

B．his duty

C．that is a duty

D．that is his duty

题型：不详难度：| 查看答案

________needs further discussion whether we’ll build a library or not.

A．We

B．He

C．It

D．The thing

题型：不详难度：| 查看答案

_______ is no good _______ without doing anything.

A．This, talking

B．It, to talk

C．It, talking

D．That, to talk

题型：不详难度：| 查看答案

________ is no difference between them.

A．There

B．Where

C．It

D．What

题型：不详难度：| 查看答案