单选题 The old car______on the way to work again, so he had to walk to his office.
【正确答案】 B
【答案解析】解析：句意为旧车在路上又出故障了，所以他不得不步行去上班。broke down“坏掉，出故障”，符合句意，故选B。broke up“打碎，分裂”，broke in“打断，闯入”，broke away“离开，退出”，均不符合题意。