You .... apologise, it isn't necessary
must not
don't have to
must
You ... smoke here; smoking is not allowed.
have to
mustn't
don't have to
You ... go now; you can stay a bit longer
musting
don't have to
have to
Visitors in the zoo .... feed the animals.
don't have to
mustn't
have to
We ... cook more; there's enough food
having to
must
don't have to
You ... do something to solve this problem
musting
must
don't have to
I don't like these clothes, but I ... wear them at work.
must
have to
having to
Teacher: "You ... arrive on time for class"
mustn't
must
don't have to
You ... tell anyone; it's a secret.
mustn't
having to
don't have to
We .... leave now; it's 10 and the conference doesn't start until 12.
must
mustn't
haven't to
The doctor has put me on a strict diet. I .... eat more fruit and vegetables and do more exercise.
musting
must
don't have to
I .... be late. It's the most important meeting of the year.
don't have
mustn't
musting
You .... put salt in her food; the doctor said she can't eat salt.
haven't
mustn't
haveing
You ..... tell the boss what happened, or he'll fire you.
mustn't
have not to
have to
You ... drive so fast; we have a lot of time
don't have to
musting
must
Do you ..... work at night? This is a day off.
must
have to
mustn't
