Irregular verbs

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Across
  1. 2. Past of cut (3 letters)
  2. 3. Past of do (3 letters)
  3. 5. Past of buy (6 letters)
  4. 6. Past of choose (5 letters)
  5. 9. Past of write (5 letters)
  6. 10. Past of come (4 letters)
  7. 12. Past of sleep (5 letters)
  8. 13. Past of drink (5 letters)
  9. 14. Past of know (4 letters)
Down
  1. 1. Past of stand (5 letters)
  2. 4. Past of drive (5 letters)
  3. 7. Past of show (6 letters)
  4. 8. Past of hear (5 letters)
  5. 9. Past of go (4 letters)
  6. 11. Past of eat (3 letters)
  7. 12. Past of see (3 letters)