They don\'t have any classes in summer怎么改病句

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They don\'t have any classes in summer怎么改病句

in 和 summer之间要加一个冠词,如:this.in summer指的是抽象的夏天.比如:Most people like to swim in summer, but some are fond of swimming in winter.大多数人喜欢夏天游泳,有些人喜欢冬天游.in the summer指...