Fill in the blanks with mustn't or don't have to
Ex3: Fill in the blanks with mustn't or don't have to
1, I ... prepare dinner because we will eat out tonight
2, You... leave any rubbish here. It is forbidden
3, You... let anyone know that. It is a big secret
4, You ... come early tomorrow because the event will start late
5, You... park your car here. There is a " No Parking" sign