我不是高手，但我能为您解答。B：what是正确的。这其实是个主语从句，it是形式主语，真正的主语是后面的what other people think about you。所以原句可以转换为：What other people think about you is none of your business.其中主语What other people think about you ，我们都知道，think about 与think of一样，都是与what 搭配的，如：What do you think of/about me？（你觉得我怎么样？）。我们还可以说，What do you think?(你觉得怎么样？)。这里的what都是做...
