Those boys helped ____in their studies.
问题描述：
Those boys helped ____in their studies.
A each other B one another C one and another D each and other
这里的答案明显D是错的...但ABC应该怎样选择,....
答
A each other 和 B one another 都是对的.如果非要选一个,那么以 B one another 为佳.
each other 用于两人之间“互相,彼此”,one another 用于 三人以上的“互相,彼此”,但在现代英语中,它们之间的界限越来越模糊,几乎通用了.