第二节：听句子，选择正确的回答。
6. A. Good morning, Helen. B. Good afternoon, Cindy. C. Good evening, Lucy.
7. A. It’s green. B. It’s a red book. C. It’s Frank.
8. A. They’re John’s. B. Yes, th ey are. C. They’re baseballs.
9. A. My name’s Sue. B. Her mother. C. Yellow.
10. A. I’m fine. B. He’s Jack. C. She is my sister.
