irregular verbs

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Across
  1. 3. read
  2. 4. make
  3. 6. teach
  4. 9. speak
  5. 10. forget
  6. 12. eat
  7. 14. write
  8. 15. pay
  9. 16. think
  10. 18. say
Down
  1. 1. bring
  2. 2. come
  3. 5. drink
  4. 7. know
  5. 8. buy
  6. 9. sleep
  7. 10. fly
  8. 11. sing
  9. 13. do
  10. 17. have