_____living in the city,the retired professor decided to move to the country.空格添什么?

问题描述:

_____living in the city,the retired professor decided to move to the country.空格添什么?
选项:A.Tired of B.He is tired C.Tiring D.Having been tiring

选B吧!
翻译过来是:住在这个城市他感到很累,这个退休的教授决定搬到乡下.