问题
选择题
The fire was finally brought under control, but extensive damage _________.
A．is caused
B．was causing
C．had caused
D．had been caused
答案
答案：D
题目分析：句意：火势被控制住，但是巨大破坏已经造成。从The fire was finally brought under control,可知造成破坏是在过去的动作之前发生了，是过去的过去的动作，所以用过去完成时，而且damage和cause是被动关系，选D。