past simple irregular verbs

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Across
  1. 2. go
  2. 4. see
  3. 8. write
  4. 10. understand
  5. 14. ring
  6. 16. do
  7. 17. think
  8. 18. feel
  9. 19. put
  10. 20. have
  11. 22. make
Down
  1. 1. know
  2. 3. speak
  3. 4. sleep
  4. 5. wear
  5. 6. become
  6. 7. buy
  7. 9. cost
  8. 11. drink
  9. 12. say
  10. 13. get
  11. 15. take
  12. 18. find
  13. 21. eat