You must do youe homework every day.
You must not climb the teachers table.
You must keep your desk clean.
You must not take your pet to the lesson.
You must do what your teacher says.
You must not speak loudly in the classroom.
You must not sleep in the classroom.
You must answer the teachers questions.
You must translate from English into Russian.
You must not talk with your friend at lessons.
You must not draw on the walls of your classroom.