用适当的代词或数词填空。

1. The boy is crying. I think ________ is hungry and wants ________ mother.

2. Helen is a student and Miss Smith teaches ________ English.

3. I'm old enough now. I can finish the work by ________.

4. Come on Monday or Wednesday. ________ day is OK.

5. —Are the keys ________, girl?

    —No, they are not ________.

6. Obey the traffic rules and learn to protect yourself. ________ is more important than life.

7. —What _______ do you want to have?

    —Thanks, that's enough.

8. Xiao Li is the right person who shows the foreigners around, for ________ of us can speak English.

9. —Which trousers are his?

    —The green ________ are his.

10. Tom often comes to see me. He is a friend of ________. 

11. September the ________ is Teachers' Day. Let's make some cards for our teachers.

12. The text is very easy. There are ________ new words in it.

13. —________ is wrong with my throat. I just feel thirsty.

     —Why not have ________ water?

14. —Shall I sit at this end of the boat or the other end?

     —If you keep still, you can sit at ________ end.

15. Our teacher asks us to read English ________ a day.

16. We enjoyed ________ at the party last night.

17. He has a dog. I want to have ________, too.