Don't just use one side of the paper, we can write on both sides.We can sticker ever envelope togethe. We can put photos in it.We can put books in a gift box.We should keep our rooms clean.We should put the rubbish in the bin.We should give our seats to old people.We can use old clothes to make a handbag.We can use newspapers to make a poster.We can use plastic bags to make a T-shirt.