Problem: M: If that is the only copy on the self, I'll give you a discount. What was said before this conversation?

A: W: I'd like this textbook, but the cover is damaged. Do you have any other copies?

Problem: M: It would deserve an award if it weren't for its last part. What was said before this conversation?

A: W: I think the film is good because it is scary. And the special effects are amazing.

Problem: M: I found it under my bed. What was said before this conversation?

A: F: Where did you find your dictionary?

Problem: W: Yes. Take the first turn on the left and the Bank of China is next to the bus stop. What was said before this conversation?

A:
M: Excuse me. Is there the Bank of China near here?