[音频]
A. Welcome!
B. Forget it.
C. My pleasure.
D. Never mind
[音频]
A. It isn't worth much.
B. I'm glad you like it.
C. You are welcome.
Don't mention it.
[音频]
A. Don't mention it.
B. I don't care.
C. It's my fault.
D. Forget it.
[音频]
A. I owe it to your help.
B. What a surprise!
C. It can't be true!
D. Good luck!