“Let’s Save the Planet – Modal Verbs in Action”

We ___ recycle paper and plastic to protect the environment.

• should

• can't

• mustn't

• may

You ___ turn off the lights when you leave the room.

• might

• can

• must

• shouldn't

Factories ___ reduce pollution.

• can't

• mustn't

• must

• may

You ___ leave the tap running while brushing your teeth.

• mustn't

• should

• can

• might

Everyone ___ learn how to protect the environment.

• shouldn't

• mustn't

• can't

• should

We ___ plant trees in our neighborhood.

• can

• shouldn't

• mustn't

• can't

Everyone ___ ride a bike to work instead of using a car.

• must

• should

• mustn't

• shouldn't

You ___ leave your computer on all night. It wastes energy.

• can't

• should

• mustn't

• may not

Oil spills ______harm sea animals.

• must

• mustn't

• may

• can't

Governments ______fine those who pollute the environment.

• should

• shouldn't

• mustn't

• might