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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
I ______________ be late. It's the most important meeting of the year.
mustn't
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.
don't have to
Whatever you do, you _____ touch that switch. It’s very dangerous
mustn't
You ______ read this book. It’s really good.
must / have to
In many countries men _____ do military service.
have to
