If ____, the dirty air will lead you to fall ill.A．breathe inB．you to breathe in

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If ____, the dirty air will lead you to fall ill.

A．breathe in

B．you to breathe in

C．breathing in

D．breathed in

答案

解析

考查非谓语动词。句意：如果被吸入，这些脏空气会导致你生病。过去分词表示被动的动作和句子主语是动宾关系，结合语境可知选D。

举一反三

Under no circumstances my bike tomorrow.

A．he is borrowing	B．is he to borrow
C．he will borrow	D．could he be borrowing

题型：不详难度：| 查看答案

Have you got a free evening next week ? ________, let’s have dinner.

A．While so

B．Since so

C．When so

D．If so

题型：不详难度：| 查看答案

He said he would arrive before seven, and______ ．

A．he did

B．did he

C．he had

D．had he

题型：不详难度：| 查看答案

—Did you see who the driver was?
—No, so quickly, that I couldn’t gat a good look at his face.

A．did the car speed by

B．the car sped by

C．does the car speed by

D．the car speeds by

题型：不详难度：| 查看答案

So difficult it to live in an English-speaking country that I determined to learn English well.

A．I have felt

B．have I felt

C．I did feel

D．did I feel

题型：不详难度：| 查看答案