Must - Have to

You ______ apologize; it isn't necessary.

• mustn't

• must

• don't have to

You ______ tell the boss what happened, or he'll fire you.

• mustn't

• don't have to

I _____ wear a tie; I do it only because I like wearing ties.

• don't have to

• mustn't

• have to

You _____ smoke in here; smoking is not allowed.

• must

• mustn't

• don't have to

I _____ be late. It's the most important meeting of the year.

• don't have to

• doesn't have to

• mustn't

I _____ leave early because I wasn't feeling well.

• had to

• must

• have to

You _____ do something to solve this problem.

• 've to

• must

• have to

I don't like these clothes, but I _____ wear them at work.

• 've to

• have to

• must

Teacher: 'You _____ arrive on time for class.'

• must

• have to

• 've to

We didn't have money, so we _____ find a cash dispenser.

• must

• have to

• had to