题目
The old man，________ abroad for twenty years，is on the way back to his motherland.（ ）A. to workB. workingC. to have workedD. having worked
The old man，________ abroad for twenty years，is on the way back to his motherland.（ ）
- A. to work
- B. working
- C. to have worked
- D. having worked
题目解答
答案
分析句子可知，该空处与the old man在逻辑上是主谓关系，所以用现在分词，且根据"for twenty years"可知，动词发生在is on the way back to his motherland之前，所以用现在分词的完成时。
故选：D。
故选：D。