5. What does the woman mean?
    A. The m an should stop drinking coffee. 
    B. The man should stop smoking.
    C. Smoking is better than drinking coffee.
6. What CANNOT we know from the talk?
    A. Bill doesn't like the book.
    B. Cindy has read the book before.
    C. Cindy likes the book very much.
7. How much does the man have to pay if he wants to buy two shirts today?
    A.$24.            B. $10.50           C.$21.