Friendly Neighbourhood - Find who is this

123456789
Across
  1. 3. who teaches students at school?
  2. 4. who takes care of teeth?
  3. 6. who catches thieves?
  4. 7. who cooks in a hotel?
  5. 8. who studies at school?
  6. 9. who serves food in a restaurant?
Down
  1. 1. who takes care of the sick and helps doctors?
  2. 2. who fights fire?
  3. 4. who drives a bus?
  4. 5. who sings songs?
  5. 6. who brings our letters?