1. ability 2. accident 3. admire 4. advice 5. agriculture 6. announce 7. apologize 8. assignment 9. atmosphere 10. audience 11. balance 12. behavior 13. benefit 14. calendar 15. celebrate 16. character 17. comfortable 18. communicate 19. competition 20. concentrate 21. confident 22. consequence 23. consider 24. continent 25. contribute 26. conversation 27. cooperate 28. courage 29. curious 30. d..