问题描述：
In Harbin it is ______ ______ in winter,急!
In Nanjing it is ________ _________ in summer
In Shanghai it is ________ in spring
In Beijing it is _________ in autumn
In Nanjing it is ________ _________ in summer
In Shanghai it is ________ in spring
In Beijing it is _________ in autumn
问题解答：
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