Bonjour serait-il possible de m’aidez pour cet exercice merci d’avance!

Maintenant, transformez les phrases suivantes en phrases à la
forme passive.
1. They dealt with all the tricky questions.
2. Nobody can sit on that chair.
3. I'm afraid you can't rely on that kind of man.
4. They are repairing our car at last! 5. We will have to send for a doctor.
6.Now I understand the reason why they are all making fun of her.
7.
They congratulated him on his behaviour