10 "cosas que debo hacer en clase y 10 "negativa"?

I must to pay attention

I must to study

I must to obey my teacher

I must to respect my clasmates

I must to be quiet

I must to work hard

I must to be seated

I must to do my homework

I must to respect my teachers

I must to get early to class

NEGATIVAS

I mus´nt get late to class

I mus'nt speak up in the class

I mus´nt play with the ball

I mus´nt argue with my classmates

I mus´nt argue with my teacher

I mus´nt be talkin

I mus´nt call by phone

I mus´nt run in the classroom

I mus´nt cheat on the exams

I musn'toffend anybody.