MUST/MUSTN'T

You ____ shout in the class

• must

• mustn't

You ____ jump in the class

• must

• mustn't

You ___ do homework

• must

• mustn't

You ___ listen to the teacher

• must

• mustn't

You ___ talk in the class

• mustn't

• must

mustn't you on walk the grass

mustn't you flowers pick the

• You mustn't put litter in the bin

• You mustn't swim

• You must drop the litter

• You mustn't drop the litter

swim mustn't you

• litter

• trees

• path

• grass