1. The girl who/that was sitting beside me is so beautiful.
  2. The man whose car you borrowed yesterday is my brother.
  3. The hotel where we stayed last week was impeccable.
  4. Have you found the book that/which you lost?
  5. The boy who/whom they're going to invite to the meeting is genius.
  6. The man whom the police arrested last night is in jail now.
  7. The food that/which you cook is always delicious.
  8. I'll never come back to the place where I lost my beloved girlfriend.