6. Children in China go to school ___________the age of 7.

5. We have P.E classes_________ Monday and Wednesday.

4. Uncle Bob usually visits his friends ___________Chinese New Year

3. Hainan Island has a lot of typhoons (台风) ________ summer.

2. Is it time ________ breakfast?

1. Our summer holiday usually starts ______ July 10th, 1999.

8. The _____________ usually last(持续) 15 days in China.

C. 用适当的介词填空

7. Listen! Someone _____________________ at the door.

6. I think it’s his second time _________________ an e-mail to his pen friend.

5. He and I ____________________ busy now.