听力原文:M Excuse me, I got this shirt for my birthday and it seems to be missing several buttons. Could I exchange it for another one? W Yes, of course. Give me the shirt and go choose another one. Do you have the receipt with you? M No, I don't. As I already told you it was a gift from a friend. He gave it to me last weekend. W Oh, well then I'm sorry but we cannot exchange your shirt without a receipt. What does the man want to do?