revision

What does this picture tell us?

• use plastic bags

• don't use any bags

• don't use plastic bags

• stop using eco-friendly bags

Smog is what kinds of pollution?

• recycle
• water pollution
• land pollution
• air pollution

What environment is this?

• Desert

• Mountains

• Plains

We should

• turn off the tap

• turn on the tap

• waste water

We should __________________ to save the environment.

• ride a bike

• walk to school

• drive a car

We should

• cut down trees

• climb up the tree

• plant trees and vegetables

You shouldn't ..................... the environment, please. Use rubbish bin.

• pollute

• recyle

• clean

• save

Animal species are in danger because people destroy rainforests.

• true

• false

We should ......................... paper, glass and plastic materials.

• recyle

• waste

• pollute

• litter

We ______ do our best to save the planet.

• can

• can't

• must

• must't