根据句意及汉语提示, 填写句中所缺的单词.

1. They have English and math on ______ (星期一) morning.

2. We often borrow some books from our school ______ (图书馆).

3. I don't know if Mary is ______ (好) at swimming.

4. Can you tell me the ______ (首都) of Canada?

5. September is the ______ (九) month of a year.

6. We should take an ______ (积极的) part in physical exercises.

7. We are strongly against dropping litter ______ (到处).

8. Lucy often plays tennis to relax ______ (自己) after school.

9. The boy is so ______ (聪明的) that he can work out the problems easily.

10. It is impolite to ______ (指) at anyone with your chopsticks while eating meals.