Modal Verbs of Permission and Prohibition

Passengers _______________ on board the airplane.

• must smoke

• mustn't to smoke

• mustn't smoke

• may smokes

All train passenger ______________ a ticket before stepping on board the carriage. This is mandatory.

• must consume

• must sell

• must lose

• must buy

All football supporters ________________ any plastic bottles inside the stadium. This is strictly forbidden.

• mustn't bring

• must carry

• may take

• might walk

Students _______________ during the exam. Those that are found to have done so shall be expelled immediately.

• must look

• can mimic

• can't take

• mustn't copy

Dogs _______________ on a leash at all times when within the park's boundaries.

• mustn't be allow

• can't be stayed

• must be kept

• might be take

Teacher, ________________ music while I do the project? I'll use my headphones.

• can't I to tune in

• may I listen to

• can't I listen

• mustn't I hear

Competitors in the tennis tournament ______________ (shout) at the umpire if they disagree with his decision.

Daniel, you _______________ (talk) while your father is talking. It's rude!

Peter, you _____________ (drink) the soda in the cupboard. We are saving it for the party next week.

If you finish your work and present it to the teacher, you _____________ (leave) early.