分类：教育/科学-升学入学-高考
问题：动词（8）？
--- Why did you arrive so late?--- We were ___ in the rush hour for half an hour.A   put up       B held up    broken up       D   shut up选什么？为什么？
回答：
B


hold up---滞留.阻塞

我们被交通高峰滞留了半个小时