Past simple - Irregular verbs

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Across
  1. 5. THINK
  2. 6. GO
  3. 8. FIND
  4. 11. SING
  5. 13. SIT
  6. 14. KNOW
  7. 15. FEEL
  8. 17. SPEAK
  9. 18. WRITE
Down
  1. 1. BUY
  2. 2. GET
  3. 3. BREAK
  4. 4. PUT
  5. 6. WIN
  6. 7. FORGET
  7. 9. DRINK
  8. 10. CUT
  9. 12. EAT
  10. 13. SWIM
  11. 15. FLY
  12. 16. SELL
  13. 19. READ