Section A1.A. Let's go now.B. Don't mention it.C. Sit down, pleaseD. Yes, I am.2.A. Yes, it is.B. All right.C. Sure, I willD. Never mind.3.A. Nice.B. Sure.C. I think so.D. Yes, please.4.A. Take it easy.B. Not at all.C. No, thank you.D. See you later.5.A. No problem.B. Go ahead.C. Here you are.D. Take care.6.A. Glad to meet you.B. Mind your head.C. Very nice.D. Quite convenient.7.A. See you again.B. Don’t be late.C. Don’t worry.D. I’d love to.