【题目】After working until midnight for two weeks, he finally ________ and had to stay in the hospital.
A. broke out B. broke down
C. broke in D. broke up
在线课程【答案】B
【解析】考查动词短语辨析。句意：连续两周工作直到深夜，他终于垮了，不得不待在医院里。break out爆发；break down（身体）垮掉，（机器）出故障；break in插嘴，闯入；break up关系破裂。结合语境可知，B选项切题。