We _____ wear a tie at work. I hate it!
have to/ must
You don't have to/mustn't be an expert to use the basic functions of the program.
don't have to
Do I should call him?
Should I call him?
We don't must make any noise; my grandfather's sleeping.
we mustn't make ...
You are ill. You ______ go to school today.
shouldn't
When we were at school we ______ wear a uniform.
had to
You must to see the Chrysler Building when you're in New York.
must see
I'm not working tomorrow, so I _____ get up early.
don't have to
You don't have to /shouldn't eat so many sweets. They are bad for you.
shouldn't
You mustn't /shouldn't say anything stupid if you want to keep your job.
mustn't
What are you doing? You mustn't/don't have to be here!
mustn't