When I came into the room, I saw him _______ his homework.

　　A. did B. does C. doing D. to do

They asked me _______ finish my homework.

　　A. when I could B. I when would C. When I can D. When could I

 The students ______ trees if it ______ raining tomorrow.

　　A. will plant, will stop B. will plant, stops

　　C. plant, will stop D. plant, stops

Your hands ______ before meals. They are too dirty.

　　A. must wash B. can wash

　　C. must be washed D. can be washed

Granny told the girl the moon ______ in the west.

　　A. goes down B. went down C. is going down D. was going down

 ________ will your sister be back ? In about two hours.

　　A. How b. How often C. How long D. How soon

There is a small village ______ the two rivers.

　　A. during C. among C. between D. in

 Miss Hunt bought some ______in the market.

　　A. pear B. tomato C. egg D. fish

We can see ______ hundreds of birds flying in _____ sky.

　　A. a, a, B. / , a C. / , the D. the, the

 My friend, Tom, kept me _______ for an hour yesterday.

　　A. wait B. waited C. waiting c. wait