Irregular verbs

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Across
  1. 5. (to) break
  2. 10. (to) forget
  3. 11. (to) fly
  4. 12. (to) teach
  5. 13. (to) sleep
  6. 14. (to) choose
  7. 17. (to) stand
  8. 18. (to) draw
Down
  1. 1. (to) know
  2. 2. (to) freeze
  3. 3. (to) catch
  4. 4. (to) think
  5. 6. (to) speak
  6. 7. (to) meet
  7. 8. (to) write
  8. 9. (to) leave
  9. 13. (to) say
  10. 15. (to) have
  11. 16. (to) see
  12. 17. (to) swim