MODALS OF PERMISSION AND OBLIGATION

_____ go to the party? I'm really tired.

• Do we have to

• Can we

• Can't we

(Parent to child) You _____ do your homework before watching television.

• must

• can

• could

I'll _____ wear the black dress tonight. The invitation said formal clothes.

• can

• have to

• mustn't

You _____ rent a car without a credit card.

• don't have to

• mustn't

• can't

I _____ forget to take my library books back on the way home.

• mustn't

• don't have to

• have to

In the US you can leave a tip in the bar if you want, but you _____.

• mustn't

• couldn't

• don't have to

(Notice on a train) Quiet carriage. Passengers _____ play music or talk on the phone in this part of the train.

• can't

• must not

• don't have to

You _____ be a member to buy a ticket. It's open to everyone.

• have to

• don't have to

• can

I'd love to come to the cinema but I _____ hand in this assignment tomorrow.

• must

• have to

• can

You _____ hit your sister again! Do you understand?

• mustn't

• don't have to

• can