F: Excuse me, can I get back my money for my ticket? I have to cancel my trip, because I have something important to deal with. It is train number 29 and we'll leave in 4 hours. ,M: It is not too late. Pass your ticket to me, please.
(A) F: I didn’t hear you. Please could you tell me again? (B) F: Here's my ticket for train number 8. I'll return it. (C) F: Thank you for helping me return the ticket. (D) F: No worry. I'll catch the train in time.
C