A、The mystery story. B、The hiring of a shop assistant. C、The search for a reliable witness. D、An unsolved case of robbery. C

W: Oh, it’s so cold. We haven’t had such a severe winter for so long, have we?
M: Yes, the forecast says it’s going to get worse before it warms up.
Q: What do we learn from the conversation?

M: You were seen hanging about the store on the night when it was robbed, weren’t you?
W: Me? You must have made a mistake. I was at home that night.
Q: What are they talking about?