In the world of professions

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Across
  1. 2. delivers letters and newspapers
  2. 4. writes poems and novels
  3. 5. owns a farm
  4. 6. treats people when they are ill
  5. 7. sings songs
  6. 8. looks after patients in hospital
Down
  1. 1. cuts and styles hair
  2. 3. comes when a house is on fire and prevents fire
  3. 4. serves customers in a restaurant