【正文】
Unit 13 We’re trying to save the earth! Section B 1a— 2b Look at our earth! What should we do to save the pla? What can we do to help save the pla? Rank these items from the easiest (1) to the most difficult (5). ____stop riding in cars ____recycle books and paper ____turn off the lights when you leave a room ____turn off the shower while you are washing your hair ____don’ t use paper napkins Recycling paper is really easy. I agree. B