mrs smith don't know how to get to the train station.【改错】

mrs smith don't know how to get to the train station.【改错】
mrs smith don't know how to get to the train station.【改错】

mrs smith don't know how to get to the train station.【改错】
正确答案是：
把don't know 改为doesn't
主语Mrs smith,为第三人称单数
时态为一般现在时
所以否定句用doesn't
翻译为：
史密斯太太不知道怎么去火车站.