6. A. Math.                                 B. Spring.                            C. Blue.

7. A. The same to you.                 B. Thank you.                      C. All right

 8. A. Oh, I see.            B. It doesn’t matter.              C. I’m sorry to hear that.

9. A. With pleasure.                    B. Nice to meet you.           C. Thank you.

10. A. For five days.                   B. Five days ago.                  C. In five days.