高等继续教育 / 专科英语II
正确率：100%
题型描述: 单选题
The old man, ＿＿＿＿＿＿＿＿＿ abroad for twenty years, is on the way back to his motherland.
A.to work
B.to have worked
C.having worked
D.working
The old man, ＿＿＿＿＿＿＿＿＿ abroad for twenty years, is on the way back to his motherland.
A.to work
B.to have worked
C.having worked
D.working
参考答案：