You … return your library books on time.
must
You… drop litter.
mustn’t
You … be quiet in the library.
must
You … go fishing in the lake.
mustn’t
You …. listen to the teacher.
must
You … shout at the museum.
mustn’t
You… pay attention in school.
must
You… return your library books late.
mustn’t
You … look after your pets.
Must
You … follow the school rules.
must
You … pick the flowers.
mustn’t
Brush your teeth after eating
must
You …. be on time
Must
You …. run across the street.
mustn’t
You… keep dogs under control.
must
You … fight with other children.
mustn’t
You … use your mobile in class
mustn’t
You … use your phone in class.
mustn’t
You… cheat on tests.
mustn’t
You … keep your bedroom tidy.
must