Question

Read and underline .

e.g:You must/mustn`t talk with your muth full .

1)You must/mustn`t eat with your hands.
2)You must/mustn`t brush your teeth ofter meals .
3)You must/mustn`t wash fruit before you eat it.
4)You must /mustn`t put knives in your mouth !

Answer 1

1) Mustn't
2)Must
3)Must
4)Mustn't