Unit 6, Week 1 1. disagreed 2. dislike 3. disappear 4. prepaid 5. preschool 6. precook 7. previous 8. rebuild 9. return 10. resell 11. reprint 12. unwrap 13. unlucky 14. untied 15. unbeaten 16. robot 17. tiny 18. label 19. unknown 20. recover