Bonjour j'ai du mal avec mon exercice d'anglais, je suis en 4ème et c'est du passif

Réponse:
1. were killed
2. be repaired
3. spoken
4. hasn't been
5. mustn't b
6. were
7. to be taken
8. were seen
9. was attacked
10. won't have to be
11. gave
12. supposed
13. were
14. offered
15. won't have
16. was
17. hasn't
18. be watered
19. cought
20. can't be
21. haven't been
22. opened
23. oiled
24. was