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On the old Silk Road, Dunhuang was the gateway to and from Ancient China, a place 11 East met West, and a green island in the middle of the desert. Dunhuang’s long and 12 (glory)history represents its significance as a centre of cultural and commercial exchange. In a sealed cave, now known 13 the famous Library Cave, 14 (hide)thousands of manuscripts, paintings and scrolls, as well as silk embroideries. 15 , in the Ming Dynasty, trade routes changed and Dunhuang was not as prosperous as it used to be. 16 (gradual), it faded from memory, even though it was once such 17 great city. With time going by, Dunhuang has once again become a global crossroads since it 18 (host) hundreds of representatives from 51 countries for the Silk Road International Cultural Expo in 2017. 19 (give)that the theme of the Expo was 20 (promote)cultural exchange and strengthen mutual cooperation between the countries along the Silk Road, Dunhuang was the ideal place.