answer: #Person2# has been listening to BBC English programs every day since 3 years ago, so #Person2# speaks English very well.
documents: #Person1#: Excuse me. Could you tell me the way to the zoo?
  #Person2#: Yes, it is just over there, across the street.
  #Person1#: Thank you. Oh, how did you learn to speak English so well?
  #Person2#: I listen to BBC English programs every day.
  #Person1#: Are they easy to follow?
  #Person2#: Yes, I use my shortwave radio and they have explanations in Chinese for the difficult grammar points.
  #Person1#: That sounds very helpful. How long have you listened to the programs?
  #Person2#: I started 3 years ago when I was in middle school.
  #Person1#: You have really improved.
  #Person2#: Thanks. Have a great time at the zoo. By the way, don't forget to see the pandas!
  #Person1#: OK. See you later.