--Late again !--Sorry. I was halfway for half an hour on my way to work this morning.A. b

问题补充：

--Late again !

--Sorry. I was halfway for half an hour on my way to work this morning.

A. broken down

B. held up

C. cut down

D. closed up

答案：

A. broken down

(答案→)B. held up

C. cut down

D. closed up

解析：句意:——又迟到了!——对不起。今天早上在上班路上我中途耽搁了半小时。break down分解，发生故障； hold up举起，阻挡，耽搁；cut down削减，砍倒； close up关闭，愈合。根据句意我迟到了，是因为我在上班的半路上被阻碍了，故选B。