Regular-Iregular verbs

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Across
  1. 2. wait
  2. 3. went
  3. 5. paid
  4. 6. knew
  5. 8. call
  6. 9. stay
  7. 10. sat
  8. 11. happen
  9. 13. try
Down
  1. 1. was/were
  2. 2. work
  3. 4. fell
  4. 7. walk
  5. 8. cost
  6. 10. start
  7. 12. sank