Problem: Given the question: W: But they're quite different, you know. The hotel would be less work! What was said before this conversation?
++++++++++++++++++++++++++++++++
The answer is:
M: Why don't we stay in one of the flats for our holiday, Mary? They sound just as good as the hotel, and it would be much cheaper.

Problem: Given the question: W: Ordinarily, I'd be happy to, but my car is in the garage. What was said before this conversation?
++++++++++++++++++++++++++++++++
The answer is:
M: The guests are leaving for New York today on the ten o'clock flight. We need someone to get them to the airport on time.

Problem: Given the question: M: Oh, really? That's not like the Tom we know. What was said before this conversation?
++++++++++++++++++++++++++++++++
The answer is:
W: Tom must be in a bad mood today. He hasn't said half a dozen words all afternoon.