Irregular verbs

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Across
  1. 1. built
  2. 3. froze
  3. 5. cut
  4. 8. drink
  5. 9. ran
  6. 10. give
  7. 13. hid
  8. 15. bite
  9. 16. leave
  10. 17. made
  11. 18. take
Down
  1. 1. became
  2. 2. keep
  3. 4. sing
  4. 6. understand
  5. 7. catch
  6. 11. go
  7. 12. swam
  8. 14. fly
  9. 15. break