PUZZLE

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Across
  1. 2. A person who delivers letters.
  2. 5. A person who teaches students.
  3. 7. A person who maintains law and order.
  4. 8. A person who takes care of patients in hospitals.
Down
  1. 1. A person who grows crops.
  2. 3. A person who treats sick people.
  3. 4. A person who keeps our surroundings clean.
  4. 6. A person who puts out fires.