听对话及问题，选择正确的答案。 1. Who's this man? A. He's my father. B. He's my uncle. C. He's my brother. 2. What's on the desk? A. A bag. B. A pen. C. A book. 3. How old is Tom? A. He's 13. B. He's 12. C. He's 15. 4. What's the boy's father? A. A doctor. B. A teacher. C. A driver. 5. How many desks are there in Mike's classroom? A.  2. B. 20. C. 22.