问题描述：
英语语法问题 有例句
An accident that occurred in the skies over the Grand Canyon in 1956 resulted in the establishment of the FAA to regulate and oversee the operation of aircraft in the skies over the US,...accident后边的那个that为什么要放在那儿,可以省略吗
An accident that occurred in the skies over the Grand Canyon in 1956 resulted in the establishment of the FAA to regulate and oversee the operation of aircraft in the skies over the US,...accident后边的那个that为什么要放在那儿,可以省略吗
问题解答：
我来补答展开全文阅读