Who is that?

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Across
  1. 3. Fights fires
  2. 5. Helps sick people get better
  3. 6. Catches bad people
  4. 7. Takes care of animals
  5. 8. Bakes bread and cakes
  6. 9. Teaches students in a school
Down
  1. 1. Builds houses
  2. 2. Flies an airplane
  3. 4. Grows crops on a farm
  4. 5. Looks after teeth