Billionaire ____ Mr. Chen is, he still works long hours every day.
A like B as C such
请问A、C错在哪呢??
要选A的话要如何改呢? 反之，C的画如何改??
关于此题B是什么文法?

Billionaire like Mr. Chen, he still works long hours...as [something or someone] is... phrase 词组习语(?)such 是形容词或代名词，没有介系词功能。或许... Such a billionaire Mr. Chen is 感觉有点怪怪的o.o

as=虽然，是让步子句(although)的倒装句。可以查文法书倒装句那一章的用法。