MUST:

You must be quiet in the classroom.

You must raise your hands to answer your teacher's questions.

You must put the litter in the gabage can.

You must go to school on time.

You must do your homework before go to school.

MUSN'T:

You mustn't eat in the classroom.

You mustn't go to school late.

You mustn't talking too much in the classroom.

You mustn't argue in class.

You mustn't use the smartphone in the classroom.

Chúc bạn học tốt nếu đáp án của mình đúng nhớ cho mình 5 sao và 1 tim và đừng xóa câu trả lời của mình nhén!!!!!Cho mình xin ctlhn nữa nhá!!!

-Students must attend class on time .

-Students must complete homework .

- Students must be quiet when teachers teach

-Student mustn't truant

-Students must thrown trash in the bin