The cancer risks _____ with smoking have been well proved.

　 A. combined　 B. associated　 C. caused　 D. joined

His d_______ to the cause of peace is well-known.

We all hope that our teacher is both strict _____us and friendly _______ us.

A. in; to　　 B. in; for　　　 C. with; to　　 D. with; for

It is re ported that the United States uses _____ energy as the whole of Europe.     

A. as twice    　 B. twice much    　 C. twice much as　　 　D. twice as much

t is said that in Iraq there are more violent accidents than the government knows________.

A. it what to do with　　　 B. what to do it with

C. what to do with it　　　 D. to do what with it

— I can’t find Tom anywhere.

—He ______his homework upstairs.

A. might have done            B. must be doing

C. should have done            D. is able to do

She has made up her mind that she will make 　　　 her sister has made.

A. as beautiful a kite as　 B. so beautiful a kite as

C. as a beautiful kite as　 D. so a beautiful kite as

I've become good friends with several of the students in my school 　　　 I met in the English speech contest last year.

A. who　　　　　 　 B. where　　　　　 　 C. when　　　　　 　 D. which　　

My family ____ all fond of singing English songs and we can sing _____ than others.

A. is, many more 　　　B. are, many more 　　C. is, much more　 　 D. are, much more

What did he say? I don’t know what _________.
A. did he say   　　 　 B. he says   　　　　 　C. he has said  　　 D. he said