That light rail transit line(轻轨), _in July 2009 and in 2012, will be China’s longest light rail transit line in history.
A. starting, pleting
B. started, to be pleted
C. to start, pleted
D. starting, pleted
网友回答
A. starting, pleting
(答案→)B. started, to be pleted
C. to start, pleted
D. starting, pleted
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