新概念3 L17 It has been estimated that if the bridge were (这里为什么不是was?) packed with cars,it would still only be carrying a third of its total capacity.

问题描述

It has been estimated that if the bridge were (这里为什么不是was?) packed with cars,it would still only be carrying a third of its total capacity.

老师答疑

罗老师：

黎老师：