三、听录音，选答语。每个对话只读一遍。

11. —How old is your brother?

    —He is twelve years old.

12. —Are these your coats?

    —No, they aren’t. They are my brother’s.

13. —What colour is your jacket? 

    —It’s purple.

14. —Where is your exercise book?

    —It’s under the English book.

15. —What is he doing now?

    —He is playing cards.