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场景一 问候与告别的第一种表达方式。 Bill: Hi, Mary. Marry: Hi, Bill. How are you? Bill: Im fine, thank you. And you? Marry: Im fine, too, thank you. Bill: How is your mother? Marry: She is very well, thank you. And how is your mother? Bill: She is also very well. Thank you. Goodbye. Marry: Goodbye. | 
