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New Seven Wonders of the World: Teotihuacan
Long ago Teotihuacan was an important religious and economic centre. However, after there _____(BE) a great fire, for some unknown reason all the population decided to leave the city. This happened in 650AD. Just like a gigantic dragon, the Great Wall runs up and down deserts, mountains and grasslands for 6,700 kilometers from east to west of China. It is one of the ______ (GREAT) wonders of the world with more than 2,000 years of history.