看到一国外bbs上老外讨论中文难学

看到一国外bbs上老外讨论中文难学。楼主发帖：My chinese test questions:怎么知道一个人( )经爱上自( )了. A:已 B:己 C:巳 D:乙 WTF…… 跟帖1：Forget it. I was crazy when I read about 辩，辨，辫and瓣. 跟帖2：I still can not distinguish between 旯and旮…. ​​​​