His uncle who works as a fireman is thirty years old(对划线部分提问

题目

His uncle who works as a fireman is thirty years old(对划线部分提问
划线部分 thirty years old ___the ___of his uncle who works as a fireman?

答案

What's the age of his uncle who works as a fireman?
路过的...不对不怨我,我不要分的.