В школе нельзя бегать по коридору и лестницам. Нельзя выкрикивать на уроке. На уроке надо поднимать руку, если знаешь ответ. В кабинете, где есть компьютеры, нельзя кушать. В кабинете нельзя бегать
We mustn't talk at the lessons. We must stand up when the teacher enter the classroom. We don't have to run in the corridors. We have to study hard. We have to wear school uniform.
We must stand up when the teacher enter the classroom.
We don't have to run in the corridors.
We have to study hard.
We have to wear school uniform.