用适当的介词填空，如不需填则画“／”。
1. Can you come to my party________Sunday afternoon?
2. Would you like to go to the.movies with us_______Friday?
3. They gets up early________he morning.
4. He does exercise________every morning.
5. Are you free________tomorrow morning?
6. Will you have a chemistry lesson________next term?
7. What do you usually do________weekends?
8. I have too mluch homework________this weekend.
9. We are leaving________the 15th.
10. Christmas Day is__________December.
11. I-Ier birthday party ls________June 30th.
12. I didr't finish my homework________10 o'clock.
13. There is a bridge________the river.
14. I get to school__________the school bus.