Paper was(1)……......invited......... by the Chinese in the first century AD. Most paper is made (2)…. ......from....... wood. When trees are (3)…… ..cut down..........., they are transported (4)….. ...by.......... land or water to paper mill. Here they are cut(5).. ......up....... and the wood is broken up into fibres. Which are (6) ....mixed........... with water and chemicals. This wood pulp is then dried on a machine and (7)…. .........made....into paper.