To protect the environment

To protect the environment : 

I mustn't pollute:

I must turn off the tap when I brush my teeth .

I must switch off the lignt when I am not in the room.

I must recycle papers ,plastics,and glass.

I mustn't throw chewing gum on the ground.

Adults mustn't ride a car on short distances.

Adults mustn't smoke and throw their cigarettes on the ground.