【题目】The roommate conflicts between college students led to little or no communication, depression and even to ________ one student.
A. killB. killingC. killed D. being killed
在线课程【答案】B
【解析】考查非谓语动词。句意：大学生室友之间的矛盾导致他们几乎很少交际，或者零交际，抑郁，甚至是杀人。and连接这两个句子主语和动词一样，and后省略了谓语动词led，但to保留，to是介词，后面的动词用-ing形式。故选B。