Irregular verbs

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Across
  1. 4. pay
  2. 5. know
  3. 7. go
  4. 8. begin
  5. 10. become
  6. 12. think
  7. 13. fly
  8. 15. build
  9. 16. bring
  10. 17. stand
  11. 18. drink
Down
  1. 1. find
  2. 2. drink
  3. 3. catch
  4. 6. wear
  5. 7. was
  6. 8. buy
  7. 9. leave
  8. 11. can
  9. 14. write
  10. 16. break