you were getting up from your seat to go to the front of the room / classroom, since you, Gregory, Estella, pocket, Christophe, Pip and Damien had to expose

Pip: who was supposed to bring the cardboard? Gregory: Christophe

Christophe: yes, I already brought it -showed the cardboard-

pocket: splendid!

Estella: can you hang up the damn cardboard once and for all, you stinky son of a bitch?

Gregory: well, teacher, we had to talk about-

damien: we better talk about the fire