ER and IR Verbs

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Across
  1. 4. to receive
  2. 5. to understand
  3. 7. to sell
  4. 10. to break
  5. 11. to attend
  6. 15. to believe
  7. 16. to write
  8. 17. to open
  9. 18. to live
Down
  1. 1. to drink
  2. 2. to hide
  3. 3. to learn
  4. 6. to run
  5. 8. to discuss
  6. 9. to answer
  7. 12. to eat
  8. 13. to climb, to go up
  9. 14. to read