answer: Lily's English class ran late again. Tom thinks it's because the final exams are coming up. Tom'll pay more attention to math problems before the exam.
documents: #Person1#: Hi, Lily. Where were you at lunchtime? I was looking for you in the dining hall.
  #Person2#: Oh, sorry, I missed you. My English class ran late again.
  #Person1#: That's been happening quite often recently. Maybe it's because the final exams are coming up.
  #Person2#: Yes. After class, there is always a group of students hanging around the professor asking questions. How about you? Are yon ready for the exams?
  #Person1#: I've been studying a lot recently, but my math problems are really giving me a big headache.
  #Person2#: Don't worry, Tom. There's still one month to go before the exam. You have enough time to work them out.
  #Person1#: Well, I don't need to spend much time on other subjects. I can pay more attention to my weak subjects.