What does he/she do?

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Across
  1. 5. a member of the police
  2. 7. a person who has studied science and whose job is to do research in science
  3. 9. a person who is trained to fly an aircraft
  4. 11. a person who starts up and runs a business
  5. 13. a person whose job is to clean things
  6. 14. a teacher who is in charge of a school
  7. 16. a person who helps students learn
  8. 17. a person who writes stories, articles, books, poems or other written works
  9. 18. a person who dances
  10. 19. a person who works in a factory
Down
  1. 1. a person who plays football, especially as a profession
  2. 2. a person who sings
  3. 3. a person who is trained to treat/help sick people
  4. 4. a person who collects and delivers letters,etc.
  5. 6. a person who catches fish, often as a job or for sport
  6. 8. a person who drives a taxi
  7. 10. a person who owns or works on a farm
  8. 12. a person who is trained to care for sick people
  9. 13. a person who makes or cooks food
  10. 15. a person who trains a person or team in sport