Choose the word /phrase (A, B, C, D) that the best fits the space in the following passage: 

Paper was _______(1)_____ by the Chinese in the first century AD. Most paper is made _______(2)________wood. When trees are cut down, they are transported by land or water to paper mills. Papermaking is an _______(3)_______ British industry and paper from Britain is exported to south Africa, Australia and many ________(4)______countries

4)___________

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