Obligation modal verbs

You _____________ eat too many calories, or you'll get fat

• mustn't

• needn't

• must

She __________ tidy up now. I'll do it later.

• don't have to

• doesn't have to

• must

• doesn't has to

My brother _____________ to wear tie at his work. He is a lawyer.

• have to

• has to

• doesn't have to

You ______________ smoke in this office. It's a rule.

• mustn't

• must

• don't have to

We have a lot of work tomorrow. You ___________ be late.

• must

• mustn't

• needn't

I _________________ clean the floor today because I cleaned it yesterday.

• have to

• must

• don't have to

We _______________ forget to set alarms before we leave.

• don't need to

• don't have to

• mustn't

Neil can't come because he _____________ work tomorrow

• doesn't have to

• has to

• mustn't

You _________ bring your passport or you won't board the plane.

• must

• mustn't

• don't have to

You __________ drink and drive.

• must

• don't have to

• mustn't