(¡¡ )6.A.Yes,you must be careful.       B. Yes, I will.      C. No, I won't.

( ¡¡)7. A. Yes, they are playing in the street.  B. Yes, they are.   C. Why not?

( ¡¡)8. A. Mom, I don't feel very well.   B. I feel a little better.  C. I think so.

( ¡¡)9. A. I'd love to.          B. With pleasure.            C. Ok.

( ¡¡) 10. A. It's fine today.      B. it's me.                  C. It's mine.