1. hasn't eaten	10. haven't sent
2. haven't studied	11. hasn't arrived
3. hasn't been	12. haven't had
4. hasn't given	13. hasn't cut
5. hasn't been	14. hasn't bought
6. hasn't started	15. hasn't worked
7. haven't worn	16. hasn't announced
8. haven't fixed	17. hasn't begun
9. hasn't recovered	18. haven't finished