Modals of Obligation

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

• mustn't

• don't have to

• doesn't have to

You ___ tell anyone what I just told you. It's a secret.

• mustn't

• don't have to

• doesn't have to

The museum is free. You ___ pay to get in.

• mustn't

• don't have to

• doesn't have to

Children ___ tell lies. It's very naughty.

• mustn't

• don't have to

• doesn't have to

John's a millionaire. He ___ go to work.

• mustn't

• don't have to

• doesn't have to

I ___ do my washing because my mother does it for me.

• mustn't

• don't have to

• doesn't have to

We ___ rush. We've got plenty of time.

• mustn't

• don't have to

• doesn't have to

You ___ smoke inside the school.

• mustn't

• don't have to

• doesn't have to

You can borrow my new dress, but you ___ get it dirty.

• mustn't

• don't have to

• doesn't have to

We ___ miss the train, because it's the last one tonight.

• mustn't

• don't have to

• doesn't have to