1. 用方框中所给的单词填空,每词限用一次。

this, those, my, your, his, hers, mine, it, they, aren't

1. （1） —Is this pencil?

   —Yes, it is.

3. （2） These photos aren't mine. They are .
5. （3） —Are these your parents?

   —Yes, are.

7. （4） The green rulers mine. They're Tom's.
9. （5） —Is this his phone number?

   —Yes, it's .

11. （6） —Is that schoolbag your sister's?

    —Yes, is.

13. （7）  is my brother. And that's my cousin.
15. （8）  name is Jim. What about yours?
17. （9） —Are erasers yours?

    —No, they aren't.

19. （10） —Are these his pencils?

    —No, they're .