11. Is Peter happy?<br />12. What does Mary do?<br />What does Mary do?<br />13. Here's a cake for you.<br />14. Do you have any uncles?<br />15. This is my new classmate.<br />This is my new classmate.
（1）
A . Yes, I am.B . No, she isn't.C . Yes, he is.
（2）
A . She is a teacher.B . She can do sport.C . He is a pilot.
（3）
A . You're welcome.B . Thank you.C . That's all right.
