企源知识库

We were ____________ for half an hour in the traffic and so we arrived late.
A、kept off
B、held up
C、put back
D、broken down
【正确答案】：B
【题目解析】：hold up 困住了的意思。整句话的意思是 我们被交通困住了半个小时,所以我们迟到了。