4. PAper (listening)

1. Fill in the missing words according to the listening. PaperPaper is made from trees, so when we recycle used paper to make new paper, we save trees. Our used paper goes to a paper recycling factory. Here, machines cut the paper and put the pieces in water. This makes the paper into fibers. Then, machines wash the fibers to take out things like staples and glue.Next, machines put in soap and the blow air through the water and fibers. This makes bubbles. Ink stays on the bubbles, and machines take out the inky bubbles to make the fibers clean. Then, machines use the fibers to make new paper.Every time we recycle paper, the fibers get smaller an weaker, and then, they are not so good for making new paper. This means that we can only recycle paper from four to six times. So we will always need some new trees to make paper.