Past participle - Irregular verbs

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Across
  1. 3. To get
  2. 4. To begin
  3. 6. To swim
  4. 7. To have
  5. 12. To come
  6. 13. To write
  7. 15. To travel
  8. 17. To sell
  9. 18. To go
  10. 19. To sing
Down
  1. 1. To do
  2. 2. To see
  3. 4. To buy
  4. 5. To use
  5. 6. To speak
  6. 8. To want
  7. 9. To eat
  8. 10. To make
  9. 11. To break
  10. 14. To be
  11. 16. To drink