It was along the Mississippi River

网友回答

It is (was) … that(who)…删除
后,剩下的词仍能组成一个完整的句子.这是
判断是不是强调句型的关键
如果强调时间、地点、原因或方式状语时,不可用
when,where,why
或how,而仍用that.======以下答案可供参考======
供参考答案1:
强调句不管强调什么，都用that引导
供参考答案2:
因为还原之后地点之前木有介词。。。
供参考答案3:
强调句的引导词只有两个（that和who: who只有强调人时才能用）
如：It was his father that/who helped him last night.
It was the book that he bought yesterday.
It was yesterday that he met his friend John in Beijing.
供参考答案4:
这是高中的英语语法，前面有介词 along 而where是副词 你懂得 ，副词前面不能加介词的，而 that加上along是可以的构成its........that强调句型呵呵，这么说你改动了吧，这也是一个区别where和that的经典句型，希望帮到你！连分也不给
供参考答案5:
不能用汉语的思维来思考，他强调的是对前面的名词的解释而不是对整个句子的解释。