8. ___________ you _________(keep) plants at home?

7. The PLA ___________(found) on August 1^st, 1927.

6. –I’m sorry to have kept you ________(wait).

--It doesn’t matter. I just ___________(arrive) five minutes ago.

5. Listen! They _________ (sing) happily.

4. It is very dangerous for the children _______________(play) football in the street.

3. Is there anything for me ___________(eat)? I ____________(not have) my breakfast yet.

2. There are many shops _____________(sell) all kinds of things at the station.

1. I didn’t want__________(do) my homework while my parents ___________(watch) TV.

30.He hasn’t decided ______ on a trip to Canada.

A. if he will go　　　　　　　　　　　　　　　 B. when will he go

C. if he goes　　　　　　　　　　　　　　　　　　　　　 D. when does he go

29.Don’t worry. I think your parents know little about it, ______?

A. don’t I　　　　　　　　 B. do they 　　　　　　 C. don’t they　　　　 D. do I