The car on half way so we had to walk to school.
A. broke up
B. broke out
C. broke off
D. broke down
网友回答
A. broke up
B. broke out
C. broke off
(答案→)D. broke down
解析：短语考查题。break up 解散，破碎； break out 爆发；break off 折断、中断；break down 出故障 “我们的车半路出故障了因此不得不步行到校”选D。