modals of obligation and prohibition

If you don't want your dessert, you ___ eat it.

• must not

• don't have to

You ___ run at the swimming pool.

• can't

• don't have to

She ___ to register for classes.

• has

• must

Doctors ___ wear a mask when they perform surgery.

• can

• have to

I ___ renew my driver's licence before it expires.

• have got to

• mustn't

David ___ watch his little sister when his parents go out.

• have to

• has to

The teacher said we ___ do the homework if we don't have time.

• mustn't

• don't have to

You ___ tell the doctor the truth or she won't be able to help you.

• must

• can

Does Henry have to give a presentation at the meeting?

• Yes, he has.

• Yes, he does.

You ___ smoke here. There is a 'No Smokin' sign by the door.

• must

• mustn't

• don't have to