aider moi svp LA PERMISSION, L'OBLIGATION ET L'INTERDICTION Complète ces règles avec must ou mustn't. a. In the school library, there is a silence sign, so we ....speak loudly. b. We eat in class. We wait until our break. c. Classes start early in the morning and we always be on time. d. We....copy our friend's homework. We do it on our own. e. We exit the class without our teacher's permission merci d'avance ❤️