You _______apologise; it isn't necessary.
don't have to
You_____ tell the boss what happened, or he'll fire you.
mustn't
I ______wear a tie; I do it because I like wearing ties.
don't have to
You _______ smoke in here; smoking is not allowed.
mustn't
I ______ be late. It's the most important meeting of the year.
mustn't
You_____ go now; you can stay a bit longer.
don't have to
Visitors to the zoo______ feed the animals.
mustn't
You_____ drive so fast; we have a lot of time.
don't have to
We______cook more; there's enough food for the party.
don't have to
You _____ put salt in her food; the doctor said she can't eat salt.
mustn't
Children__ chat in class.
mustn't
I_____ study this weekend. I can rest a lot.
don't have to
We _____ walk the dog every hour. He just needs one walk a day.
don't have to
You _____ tear pages out of books.
mustn't
