Find the opposite 1

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Across
  1. 3. clever
  2. 6. young
  3. 8. tall
  4. 10. right
  5. 11. cheap
  6. 12. quiet
  7. 14. open
  8. 17. asleep
  9. 18. early
  10. 20. wet
  11. 21. full
  12. 23. wide
Down
  1. 1. hard
  2. 2. good
  3. 4. kind
  4. 5. unfriendly
  5. 7. clean
  6. 9. strong
  7. 13. difficult
  8. 15. high
  9. 16. happy
  10. 19. fat
  11. 22. rich