answer: John didn't hand in his papers on time because his computer was broken, so Mrs. Smith agrees to give him extra two days.
documents: #Person1#: Have you handed in your papers, John?
  #Person2#: Sorry, Mrs. Smith. I haven't finished them yet.
  #Person1#: But you must have handed them in by last Friday. And now it's Monday.
  #Person2#: I am terribly sorry. The problem is I wrote it with my computer, but it failed to work. I need some time to get it repaired. I promise I'll give them to you in 2 days.
  #Person1#: Alright I'll wait 2 days. But if you break your promise, you know what the result will be.