Tony for the pany as an engineer for two decades. Now he teaches mechanics in Peking University.
A. has worked
B. worked
C. is working
D. had worked
网友回答
A. has worked
(答案→)B. worked
C. is working
D. had worked
解析：句意：托尼曾在公司当经理二十几年，现在他在北大教机械学。根据第二句可知托尼在公司上班发生在过去，故选B。