Practice with Prefixes!

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Across
  1. 3. _ _ do
  2. 5. _ _ heat
  3. 7. _ _ _ honest
  4. 9. _ _ happy
  5. 11. _ _ friendly
  6. 13. _ _ _ _ active
  7. 15. _ _ _ _ _ human
  8. 19. _ _ _ _ _ natural
  9. 20. _ _ fill
  10. 21. _ _ useable
  11. 22. _ _ _ _ modern
Down
  1. 1. _ _ _ _ game
  2. 2. _ _ join
  3. 4. _ _ _ similar
  4. 6. thought _ _ _
  5. 8. _ _ peat
  6. 10. _ _ _ stop
  7. 12. _ _ _ historic
  8. 14. end _ _ _ _
  9. 16. help _ _ _
  10. 17. _ _ _ _ confident
  11. 18. use _ _ _ _