Question: W: Oh, I had planned to drive a car there, but now I've changed my mind. M: What? W: I think flying will be more comfortable. What was said before this conversation?
Answer: M: Are you going to New York by car or by train?

Question: M: Nothing, I'd rather not talk about it. Just don't ask. W: Come on. I think you need to let off some anger. Not have your feelings held back like that. It'll eat your life. What was said before this conversation?
Answer: W: You look so angry. What happened?

Question: W: Sure. But my class ends at 7:30. And the professor never finishes on time. What was said before this conversation?
Answer:
M: My roommate and I are going to see a film tonight. And we are leaving at 7:40. Do you want to join us?