It is no longer a secret.There is no one...knows that.我什么用but?who我什么不行?

问题描述:

It is no longer a secret.There is no one...knows that.我什么用but?who我什么不行?

根据句意,这不在是一个秘密.所以用who的话意思就是没人知道,逻辑不对
所以用but表转折