MUST AND MUSTN'T

• You must eat in class.

• You mustn't eat in class.

• You must throw papers on the floor.

• You mustn't throw papers on the floor.

• You must arrive late to class.

• You mustn't arrive late to class.

• You must drink water.

• You mustn't drink water.

• You must respect your classmates and your teacher

• You mustn't respect your classmates and your teacher

• I must make fun of my classmate.

• I mustn't make fun of my classmate.

• I must bring my materials to class

• I mustn't bring my materials to class

• I must concentrate in my work.

• I mustn't concentrate in my work.

• I must make errors.

• I mustn't make errors.

• I must do my homework.

• I mustn't do my homework.