Obligation, Prohibition and Suggestion

You __________ to wear a helmet while riding a motorcycle in this country.

• should

• must

• could

• may

2. She __________ finish her homework before watching TV

• could

• will

• has to

• might

We __________ be at the airport by 6.00 AM for our flight.

• should

• must

• can

• will

You __________ pay your bills on time to avoid late fees.

• would

• might

• have to

• could

Students __________ raise their hands before speaking in class.

• should

• must

• may

• could

He __________ be here by 9.00 AM for the meeting.

• would

• might

• has to

• could

They __________ clean their room every Saturday.

• could

• will

• should

• may

I __________ finish this report by tomorrow.

• have to

• might

• would

• can

You __________ not talk during the movie.

• could

• will

• must

• may not

You _________ smoke in this building.

• should

• must

• must not

• might