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摘要
<正>November 21 is World Hello Day. The day is full of smiles and greetings(问候). It started on November 21, 1973.In the world, people use at least(至少)2,796 languages to say hello. What do you say to greet people in China?How do people say hello in Englishspeaking countries? People usually say,"How are you?"You can answer,"I’m fine","very good, thank you", or"not bad,thanks".You can also ask"and you?"
