Completar Frases Passive voiceVersión en línea Lee el texto y complétalo. Usa passive voice puede estar en presente o pasado, dependiendo del texto. por Juliana Ibarra roa 1 How is paper produced Paper from wood . The fibres of wood from trees with water until they becomes a soft wet pulp , which . This method of paper - making in the 2nd century B . C in China . However , early writing material ( always ) from wood . In fact , the word paper comes from papyrus plants which by the Egyptians to make a form of paper in 3000 B . C . When machines for paper making in the 19th century , paper became easy to afford . Today , one of the problems with the huge production of paper is that a chemical called chlorine to make the paper white . Recycling is important because chlorine and less energy for recycled paper .
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