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    Wang Bin is a football fan. There is a football match between Chinese team and American team. He wants to watch it. He comes to the box office(售票处) and gives the clerk 10yuan. The clerk says, "Please give me another 10yuan. The price(价格) of a ticket is 20yuan."

    "Why?" says Wang Bin, I just watch Chinese team. I don't want to watch the other team at all. Do you want me to buy a ticket for them? No, no, no…"