Has it been announced _______ the planes are to take off?

[    ] 　　

A. when　　B. if　　C. which　　D. what

____________ is unknown to us all.

[    ] 　　

A. Where did she put it　　 B. Where she put it 　　

C. That where she put it    D. In which she put it

The trouble is __________ we are short of hands.

[    ] 　　

A. what   B. that   C. how   D. which

My hometown is not ___________ it used to ________ ten years ago.

[　　]

A. when, do   B. what, do   C. what, be   D. when, be

Energy is ______ makes things work.

[　　] 　　

A. what   B.everything   C.something   D. that

Have you any idea _____________? 

[    ] 　　

A. how fast does light travel   B. how quick light travels 　　

C. how soon light travels　　   D. how fast light travels

His suggestion ____________ to see the art exhibition interested every one of us.

[    ] 　　

A. that we go　　　　 B. which we should go 　　

C. that we would go   D. we would go

After the new technique was introduced, the factory produced _____ tractors in 1996 as the year before.

[    ] 　　

A. as twice many   B. as many twice 　　

C. twice as many   D. twice many as

It's really kind ____________.

[    ] 　　

A. of you to say so   B. for you to say so 　　

C. of you saying so   D. for you saying so

Henry's pronunciation is ________ in my class.

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