F: I hear you've bought a new car. ,M: You're so well informed. That's true. ,F: So you don't have to rush to work in a crowded bus anymore.
(A) M: Yes, I used to go to work on foot when I was young. Then I bought a bike. (B) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (C) M: You're right. I'm tired of taking the bus to work. (D) M: Yes, I used to go to work by bus when I was young. Then I bought a bike.
C