Modals of Permission, Obligation, and Prohibition

_________ I go to the library, please?

• can

• can't

Dolphins ___________ swim very fast.

• can

• can't

I _____________ go to bars because it's prohibited for 17 years old and below.

• can

• can't

Penguins __________ fly.

• can

• can't

__________ you dive? No, I ____________ .

• can, can't

• can't, can

I ___________ eat in the classroom.

• must

• musn't

Sheena _________ use her books in quizzes.

• must

• musn't

My dad __________ eat too much sugar foods for he has diabetes.

• must

• mustn't

Everybody ________ wash their hand every time they touch something.

• must

• mustn't

Denie _________ do his chores everyday.

• must

• mustn't