The old man, _____ abroad for twenty yea
题型:选择题
问题:
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
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