1. A. I don’t know. B. Sorry, I have no watch. C. Ask others.
2. A. Yes. B. No, not at all. C. It doesn’t matter.
3. A. Nice to meet you, Mike. B. Hi! I’m Mike. C. How are you?
4. A. Good luck. B. Oh. It's nothing. C. Thank you.
5. A. It’s a pity! B. Good idea! C. Why?