I _____ on the computer when Jim came to see me yesterday evening．

　　A．draw　　B．drew　　C．was drawing　　D．am drawing

桽hall we have the volleyball match tomorrow?

　　桹h,it will be put off if it _____．

　　 A．snows　　B．is snowing　　C．snowed D．snow

桰 can't stop playing computer games．

　　桭or your health，I'm afraid you _____．

　　A．can　　B．may　　C．must　　D．have to

There will be many kinds of shoes　_________　this Sunday.I'll go and buy a pair　________　my daughter.

　　A. on show; for

B. on foot; to

C. on watch; from

D. on business; at

It's my turn to be　________　duty today.　I have to go to school early.

　　A. for　　B. on C. in　　D. of

桪oes your grandfather often read newspapers　_________　breakfast?

　　梇es,he does.

　　A. on　　B. in C. at　　D. of

These American scientists arrived　_________　Guangzhou late　________　night.

　　A. on; at　　B. in; at　　 C. in; in　　D. at; in

Nobody can stop me　_________　working hard　__________　English.

　　A. for; in　　B. on; for C. from; at D. in; on

It's very nice　________　you to take care　________　my baby while I was away.

　　A. for; of　　B. to; for　　C. with; after　　D. of; of

Now many children like surfing　________ _________　the Internet,　but　________　the same time they should know that there is something unhealthy on it.

　　A. for;in　　B. at;by　　C. on;at　　D. in;on