F: Are you going to leave? It's already 7:30. ,M: No. I am going to wait another 20 minutes.
(A) F: OK. Are you leaving at seven fifty? (B) F: Why do you leave at half past seven? (C) F: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (D) F: It is 7:50 now. You should leave.
A