Ответ:

  1. True. Jane and the others are of the same age as Alexander, who is sixteen.
  2. True. Peter is from Warsaw, Poland.
  3. False. Peter is a future designer.
  4. False. The text says that they exchange emails, speak on the phone and Skype, but it does not say that all of them are smart computer users.
  5. True. They are friends who communicate by email and other means.

Ответ: 1 — True; 2 — True; 3 — False; 4 — False; 5 — True.