M: Wow, what a long line behind us. Seems like Chinese people are all here. ,F: I can understand. I mean it is more convenient taking a flight back home town during the Spring Festival. ,M: Oh, it's your turn to check in.
(A) F: It's a tourist season. There are so many people at the airport. (B) F: Where do I check in and board the plane? (C) F: Excuse me, could you repeat the question? (D) F: Which line of bus you will take?
B