past tense crossword

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Across
  1. 2. ring
  2. 3. learn
  3. 4. sleep
  4. 5. sing
  5. 6. know
  6. 8. wake
  7. 12. put
  8. 13. teach
  9. 14. have
  10. 16. understand
  11. 17. undergo
  12. 18. lay
  13. 19. drink
  14. 20. tear
  15. 22. creep
Down
  1. 1. meet
  2. 2. lend
  3. 4. stand
  4. 7. get
  5. 9. forget
  6. 10. say
  7. 11. become
  8. 12. cost
  9. 14. feed
  10. 15. go
  11. 16. bend
  12. 18. break
  13. 19. trhow
  14. 21. speak