Chengdu Metro Line l, _____ into use in
题型:选择题
问题:
Chengdu Metro Line l, _____ into use in October 2010, has made the traffic in this city not so busy. |
A. to be put B. being put C. having put D. put |
Chengdu Metro Line l, _____ into use in October 2010, has made the traffic in this city not so busy. |
A. to be put B. being put C. having put D. put |