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What ceremony is the speaker addressing? The ______________ ceremony of the International Arts Contest. 17. What opportunity does the contest provide for young people? A good opportunity to ______________ their creativity. 18. How many countries and regions participate in the contest now? ____________________________________. 19. What is the theme of the contest for this year? The theme is _________________________. 20. In what way are the photographic works submitted? Through the _________________ from overseas.