Fill in the correct form of the verbs in brackets: active or passive.
Today, paper 1. ________ (USE) for hundreds of things - not only books and newspapers, but also money, stamps, bags and even clothes.
In ancient times, before the invention of paper,people 2.________ (WRITE) on animal skins, bones and stones. In 2700 BC the Egyptians 3.________ (START) to make papyrus, which was similar to paper. But the first real form of paper 4.________ (INVENT) in 105 AD by a Chinese government official. It 5.________ (MAKE) from a mixture of plants and clothes. The Chinese 6.________ (KEEP) their new discovery a secret for many centuries.
Finally, in the 10th century, paper 7.________ (BRING) to Europe by the Arabs. The first European paper mill 8.________ (BUILD) in Spain in 1150. Since the 18th century, most paper 9.________ (MAKE) out of wood, because it is much stronger than cloth.
Today, each person 10.________ (USE) about 300 kg of paper every year. It has become a material that we cannot do without.