答案it 指代the severe snow storm; it caused to the...是省略了关系代词的定从, 因为the sufferings在定从中作宾语.即: the severe snow storm caused the sufferings to the... 凶猛的暴风雪给(人们)造成了灾难. ...有cause sth to sth 的结构吗 说不大通似的。。cause sth to sb./ sth 给某人/某物造成了..., 有这种用法. 第一个sth 通常指"loss, damage.suffering " 等, 如: The earthquake caused greatdamage to the house/bridge/area.