—— abroad for 10 years he went back home.A. Working B. Having workedC. To work D. Worked

问题补充：

—— abroad for 10 years, he went back home.

A. Working

B. Having worked

C. To work

D. Worked

答案：

A. Working

(答案→)B. Having worked

C. To work

D. Worked

解析：考查现在分词的完成时做状语，因为他是现在国外工作了，才回家的，在状语的动作和主句的动作有明显的先后关系，用Having worked，选B。