Onaverage,thereare800tornadoesintheUSeachyear, 国语站 题库 5.87K 大中小设置文字大小 问题详情: On average, there are 800 tornadoes in the US each year, ______ about 80 deaths and 1,500 injuries.A. have caused B. causing C. caused D. to be causing【回答】B知识点:非谓语动词题型:选择题 TAG标签:#