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add dry introduce invent mix not make not need produce use (x2)

Paper (1) from wood. The fibres of wood from trees(2) with water until they becomes a soft wet pulp, which(3). This method of paper-making (4) inthe 2nd century BC in China. However, early writing material (5)(always) from wood. In fact, the word papercomes from papyrus plants which (6) by the Egyptians to make a form of paper in 3,000 B.C. Whenmachines for-paper making (7) in the 19thcentury, paper became easy to afford. Today, one of the problems with thehuge production of paper is that a chemical called chlorine(8) to make the paper white. Recycling isimportant, because chlorine (9) and less energy(10) for recycled paper.

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