Irregular verbs-- Participle past

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Across
  1. 2. do
  2. 4. swim
  3. 5. teach
  4. 8. catch
  5. 9. wear
  6. 10. become
  7. 12. throw
  8. 14. take
  9. 15. bring
  10. 16. fall
  11. 17. stand
  12. 19. Know
  13. 20. be
Down
  1. 1. get
  2. 3. eat
  3. 4. steal
  4. 6. grow
  5. 7. Buy
  6. 8. choose
  7. 11. write
  8. 13. wake
  9. 16. fly
  10. 17. see
  11. 18. sing