1. A. Good idea.               B. Enjoy yourself.            C. By reading the textbook.

2. A. I agree with you.          B. So did I.                 C. Not at all.

3. A. I hope so.                B. I'll say no.                C. That's all right.

4. A. I prefer fast music.         B. Yes, I do.                 C. No, I don't.

5. A. In China.                 B. By Shen Nong.            C. Over 3,000 years ago.

6. A. You're welcome.           B. It doesn't matter.           C. I'm not sure.