听力原文：M: Hello, Lucy. This is Mac. How are you? W: Fine, thank you. A bit too busy, though, you know, I'm trying to put everything in order in my new apartment. M: Oh, I see. Well, I was wondering if you'd like to go to a concert tomorrow evening. I think it'll be good. And if I remember correctly, you did say you like pop music． W: Yes, that's right. I do. It's nice of you to ask me, Mac. But I don't think I can. Margaret has already asked me to see a friend and then we'll go to the cinema together. In fact, she's getting the tickets this evening. M: Oh, well. Never mind. What about next weekend? This concert is still on then. I think. if you're free next Saturday. W: Oh, I'd like to very much, but what time exactly? M: Well, it starts at 7:00 P.m., I think. W: Oh, good, that'll be fine. The basketball match will be over by 5:30 . I'm sure. M: Good, I'll call you again when I get the tickets. W: Sure. Bye for now. Why did Mac call Lucy? (8)