动词加ing形式：例：go—going
1. listen—  __________    2. draw—  ________ 3. read—  ________ 
4. answer— _________   5. clean—   _________ 6. do—  _________

找出错误并改正。
【小题1】These girl on the square areflying kites. （______）________
A B   C
【小题2】Let’s playing basketball with our friends. （______）________
A B C
【小题3】There aremanycow on the farm. （______）________
A   B   C
【小题4】Two girlsaretakeing pictures happily. （______）________
A   B   C
【小题5】Li Hong can’tplays football with her friends. （______）________
A   B    C

用所给词的正确形式填空。
【小题1】We should stop _________ (throw) rubbish into rivers.
【小题2】In the past, the Earth _________ (be) clean and beautiful.
【小题3】My brother is __________ (plant) trees in the backyard.
【小题4】The Earth __________(get) sick now.
【小题5】We shouldn’t __________ (cut) down so many trees.

What are they ___________ on the table? (    )

A．putting

B．puting

C．put

________stamps is my hobby. (　　)

A．Collect

B．Collecting

C．Collects