AIDS control and prevention is a ________ to China as well as the whole world.

A. surprise　　 　　 B. challenge　　 　 C. reaction　　 　　 D. threat

Mr. Smith gradually _____ a knowledge of the subject.

A. attained 　　 B. achieved　　 C. required 　　 D. acquired

How can you _______ yourself promoted if you just stay here, doing nothing at all?

A. do 　　 B.　 consider　　　 C. cause 　　　 D. get

—Mum, I climbed to get the Teddy Bear from the top of the shelf.

    —My goodness! You _____ yourself. You mustn’t do that next time.

    A. must have hurt                　　 B. should have hurt 

    C. may have hurt                 　　 D. can have hurt

When asked by the police, he said that he remembered ______at the party, but not _______.

A. to arrive; leaving　　　 B. to arrive; to leave

C. arriving; leaving　　　 D. arriving; to leave

–I’ll be away on a business trip. Could you mind looking after my cat?　　 –Not at all. ___.

A. I’ve no time　　　 B. I’d rather not　　　 C. I’d be happy to 　　 D. I’d like it

Cars moved very slowly in the 1920s, but they ______ move more quickly than in 1910、

A. were to     B. did     C. will    D. can

He got himself into a dangerous situation ________ he is likely to lose control over the plane.

A. where　　　 B. which　　 C. while　　 D. why

One should always ______ one’s promise.

　　 A. insist on　 B. stick to　　　 C. hold on　　 D. keep up

Fortunately it won' t make ______ of difference if I don’t pass the test..

　　　　 A. the awful lot　 B. an awful lotC. a lot awful　 D. an awful lots