单选题 We were ______ for an hour in the traffic and so we arrived late.

【正确答案】 B
【答案解析】根据题意,应填 B。held up的意思是“阻挡,使停住”为正确选项。其他词辨义:A.kept off使不接近,让开; C.put back推迟,使后退;D.broken down中止,停顿。