1) Complete as regras escolares usando must / mustn't:
a) You
study hard if you want to pass your exams.
b) You
sleep in class.
c) You
arrive late to school.
d) You
listen to your teacher.
e) You
play in class.
f) You
bring your books and notebooks to school every day.
g) You
use your cellphone in class.
h) You
shout at the teacher or your classmates.
D) You
eat in the classroom.