The teacher doesn’t permit ___________in class.A．smokeB．to smokeC．smokingD．to ha

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The teacher doesn’t permit ___________in class.

A．smoke

B．to smoke

C．smoking

D．to have a smoke .

答案

解析

略

举一反三

______to use in April,2005,the road has solved the long-standing problem of traffic jams of this area．

A．Put

B．Putting

C．Having put

D．Being put

题型：不详难度：| 查看答案

A number of people have posted their own videos on the website You Tube, ____________their attempts to become “musicians”.

A．to show

B．showing

C．showed

D．show

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If____________ , the polluted air can result in deadly diseases or even death.

A．being breathed in	B．having been breathed in
C．breathed in	D．breathing in

题型：不详难度：| 查看答案

Seeing that the old lady had no chair ___, the boy offered her his own.
A, to sit B to be seated C. to seat herself D. to sit on

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This school, _____ for two years ,is intended for the disabled children .
A being built B having built
C having been built D was built

题型：不详难度：| 查看答案