They are _______the insects carefully. （ ）

A．watch

B．watching

C．watches

What are you doing, Mum? I’m ____.(   )

A．running

B．runing

C．run

用所给动词的适当形式填空。
1. The little boy wants _________(eat) a big apple now. So please_______ (bring) one to him. 
2. Tom often_________(go) to school at 7:00. Now, he________   (take) a taxi.
3. --- ______She_____( write) to her friends on Sundays?
---Yes, now she________  (write) a letter now.  
4. ---Where _______Mr. Black usually_________(run)?
---In the park. Now, he__________ (run) in the neighborhood.

用所给词的正确形式填空。
【小题1】Listen! Someone ______ (sing) in the music room.
【小题2】Why ______ (do) they like running?
【小题3】He ______ (not like) playing basketball. He ______ (like) playing tennis.
【小题4】She sometimes ______ (go) to school on foot.
【小题5】My hobby is skating. Is skating ______ (you) hobby?
【小题6】I often help my mum ______ (clean) the windows on Sundays.

填空题
1. Do you like these ________ (banana)?
2. The train is ________ (leave).
3. Danny ________ (jump) on the train.
4. ________ (Do) forget your toy car.