The thief was arrested by the policemen（ ）.

The thief was arrested by the policemen（ ）.


A、

at the spot 


B、

on the spot


C、

for the spot 


D、

in the spot


【正确答案】：B
【题目解析】：

本题考查的是spot的词组搭配，on the spot：当场，符合句意，选B。句意：小偷当场被警察逮捕了。