Missing letters

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Across
  1. 3. F_na_
  2. 5. Will not not
  3. 6. 4down +r
  4. 9. sadness
  5. 10. What you do with bow
  6. 12. do not
Down
  1. 1. __ll
  2. 2. murder
  3. 4. don’t find
  4. 7. help
  5. 8. medicines
  6. 10. save
  7. 11. pack