the enemy dropped hundres of boombs , ------ many deaths and great destruction
A CAUSED B CAUSING
答案是是B 为什么 我觉得A 也对 扩展为 非限制定语从句 which had caused many ....
问题补充:
扩展为非限制定语从句,修饰整个句子, 翻成 这?
the method , dicussed yesterday , was interesting . = the method , which was discussed yesterday , was interesting. 非限制定语从句不能省关系代词、副词, 这样,分词这样用就错了吗