I ... be late. It's the most important meeting of the year.
mustn't
We had much money, so we _____ take any rom our parents.
didn't have to
I don't like these clothes, but I _____ wear them at work.
must/have to
I'm afraid that tomorrow we .... finish the project for the history lesson.
will have to
I _____ leave early because I wasn't feeling well.
had to
You .... apologise; it isn't necessary.
don't have to
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