听对话,回答问题。 1. Who is this strong man? [ ] A. Nancy's grandfather. B. Nancy's father. C. Nancy's big brother. 2. What's her grandfather's hobby? [ ] A. Playing tennis. B. Swimming. C. Watching basketball. 3. What can we get from the conversation? [ ] A. John doesn't know her big brother. B. Her big brother works in a school. C. There are more than three people in the picture.