问题补充：
What a pity! I missed meeting my boss at the airport because my car was in the traffic jam.
A. broken up
B. kept back
C. held up
D. kept on
答案：
A. broken up
B. kept back
(答案→)C. held up
D. kept on
解析：短语辨析。A分手，关系破裂，分解；B阻止，抑制；隐瞒，保留；C支持，支撑，延迟；抢劫；展示，举出；D继续不断,保持；结合句意可知C正确。句意：真遗憾啊！在机场我没有接到老板，因为我的汽车在交通堵塞里被延误了。
