Sorry to be late， but we were _______ for half an hour in the traffic.
A. put back B. broken down C. held up D. kept off
正确答案：C
答案解析：短语动词辨析：put back 推迟；broken down 破坏；held up 阻挡、拦截；kept off 避开
相关内容：
2013年自考英语二语法练习每日一练（10.23）
（责任编辑：vstara）
