F: I hope you enjoy the rest of the flight, sir. Don't forget to fill in your landing card. ,M: Thank you. I really appreciate your service.
(A) F: You're welcome. As a secretary, it is my duty. (B) F: You're welcome. As an air hostess, it is my duty to fill in the landing card for you. (C) F: You're welcome. As an air hostess, it is my duty. (D) F: Excuse me, could you repeat the question?
C