指出错误并改正having a walk after supper are good for our healh
问题描述：
指出错误并改正having a walk after supper are good for our healh
答
having a walk after supper are(改成is,这里指散步一事） good for our healh
答
系动词用错了
改为：having a walk after supper 【is】 good for our healh
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