ESERCIZIO NUM: 371 - CATEGORIA: verbi > modali can-must - DIFFICOLTA': ****
CLICCA QUI per aprire un TUTORIAL sui VERBI prima di svolgere l'esercizio

Completa le frasi con MUST o MUSTN'T.

1 You ... brush your teeth before going to bed. -- 2 You ... let your dog out every day. -- 3 You ... play football at home. -- 4 You ... be rude to your grandparents. -- 5 You ... do your homework. -- 6 You ... chew gums in class. -- 7 You ... go out when you are ill. -- 8 You ... remember your best friend’s birthday. -- 9 You ... wear warm clothes when it is cold outside. -- 10 You ... pass all exams to get an university degree.