M: When does the next bus leave? ,F: You just miss one by 5 minutes. Buses leave every 20 minutes, so you'll have to wait a little.
(A) M: I'll wait here for 25 minutes for the next bus. (B) M: So I have to wait 20 minutes. (C) M: Oh dear, I just missed the bus? So I have to wait 15 minutes more. (D) M: I’m sorry, I didn’t catch that. Would you mind speaking more slowly?
D