A-A+
Although ______ before the war the engine is
问题详情
Although ______ before the war, the engine is still in perfect order.
A．building
B．to build
C．built
D．Being built请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：C
解析：考查分词作状语的用法。分词可以和连词一起用，接近于状语从句的紧缩形式。本题的build与主句主语engine是被动关系，所以要使用过去分词built，分词结构等同于although it was built before the war。例如：Unless (it is) changed, this law will make life difficult for farmers. (除非加以修改，否则这条法律将给农民的生活造成困难。)
