Ответ:

  1. The bats have sharp teeth.
  2. The people whose horse won the race come from Portugal.
  3. Jane was there when she bought the iPhone.
  4. Games were held in Sochi.
  5. He is the house where he was born.

Ответ: 1) have, sharp; 2) whose; 3) when; 4) were held; 5) where.