we bought hot dogs and pop.改否定句
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weboughthotdogsandpop.改否定句weboughthotdogsandpop.改否定句weboughthotdogsandpop.改否定句bought替换为did''tbuy
we bought hot dogs and pop.改否定句
we bought hot dogs and pop.改否定句
we bought hot dogs and pop.改否定句
bought替换为did't buy