听力原文:W: Morning, John ! You are late again ! M: Oh, Jane, I' m terribly sorry. W: So, what' s the excuse this time? M: Well, you see, I forgot to set the alarm clock last night and I... W: Yeah, and last week it was broken. M: Yes, I know... W: Hmm! I hope you won' t find something wrong again next time. M: I promise you it won' t happen again. W: What about the tickets for the concert tonight? M: Oh, I' m really sorry. I did the booking too late, and all the tickets had been sold out. W: You should have booked earlier. M: I' m so sorry. I'll try to get the tickets next time. I promise. What was the man's excuse for having been late this time?