It's our duty not to ________ the environment. （   ）

A．pollute

B．use

C．put

D．polluting

找出错误并改正。
【小题1】Jenny is writinga email to Steven. （______）________
A   B C
【小题2】This wall have a beautiful picture on it. （______） ________
A B C
【小题3】Don’t forget write your name last. （______）________
A B    C
【小题4】— How manyare those black T­shirts?  — Fifteen yuan. （______）________
A B    C
【小题5】Danny and Jenny wants to buy some postcards. （______） ________
A B C

用所给单词的适当形式填空。
【小题1】In the classroom, we should be_____________（quietly).
【小题2】Helen is_____________ . She dances _____________.(happy)
【小题3】The mouse_____________（bite)the door yesterday.
【小题4】—Would you like_____________（eat)some mushrooms? —Yes, please.
【小题5】The lion_____________（get)out from the net at last.
【小题6】You shouldn't_____________（catch)the birds. They are our friends.
【小题7】The dog and the cat_____________（become)good friends from then on.
【小题8】The boy_____________ (say), "I will go to the park." Then he got on the bus.
【小题9】The girl is_____________（dance)beautifully.

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.

选词填空，把正确答案写在横线上。
【小题1】I do ______ (me, my) homework in the study.
【小题2】He does ______ (my, his) homework in the classroom.
【小题3】Lily ______ (have, has) a bike.
【小题4】I ______ (have, has) a toy bus.
【小题5】We do ______ (my, our) homework together.
【小题6】He likes ______ (draw, to draw) pictures.
【小题7】She does ______ (her, she) homework at school.