answer: Fred is late because his maths teacher always keeps students in class too late. #Person1# advises him to tell her about it in a friendly way when she's not busy.
documents: #Person1#: Oh, hi, Fred! I didn't know whether to save you a place or not. Why are you so late?
  #Person1#: It's our maths teacher. She always keeps us in class until ten past ten.
  #Person2#: Doesn't she know that you're supposed to get out at ten?
  #Person1#: I guess so. But she never looks at her watch. She just keeps talking.
  #Person2#: Don't the students complain about it? I would say something.
  #Person1#: No. Everybody is too polite.
  #Person2#: Well, you could try and talk to her.
  #Person1#: Maybe. But I'm afraid she might feel hurt.
  #Person2#: Well,it all depends on how and when you say it. If you tell her about it in a friendly way when she's not busy, she might be thankful. She might even ask you to remind her of the time in the future.
  #Person1#: Really? That would be wonderful. Thanks for your advice.