Your friends has some new neighbours Perhars he has met them.You ask him:

Question

Your friends has some new neighbours Perhars he has met them.You ask him:

Answer 1

Have you met (any of) your new neighbours yet?
Ты уже познакомился с твоими новыми соседями (с кем нибудь из твоих новых соседей)?

Answer 2

Where have you saw them  before ?