Modal Verbs

You ______ recycle bottles, plastic and glass.

• mustn't

• should

• shouldn't

• must

You ________ touch electric sockets with a wet hand.

• must

• should

• mustn't

• ought to

Children ________ play with electricity.

• shouldn't

• ought to

• must

• should

You ________ put away your clothes before you go to bed.

• must

• mustn't

• should

• shouldn't

You _______ feed the dog before you go to bed. Don't forget!

• should

• must

• must't

• ought to

The doctor told him that he _______ eat less. He’s too fat.

• must

• mustn't

• should

• shouldn't

We _______ stay out late at night. I don't think it's a good idea.

• should

• shouldn't

• mustn't

• must

Dan ______ study for his test if he doesn't want to fail.

• must

• mustn't

• should

• shouldn't

Your sister ________ clean up this mess.

• mustn't

• shouldn't

• ought to

• must

You ______ chat in class.

• must

• ought to

• shouldn't

• should