The police stopped the driver because he didn’t ________ when the traffic lights were red．

The police stopped the driver because he didn’t ________ when the traffic lights were red．

A.pull out

B.pull up

C.put out

D.put up

答案及解析： B

解析：

警察把司机拦下来是因为司机在红灯亮时没有把车停下来。pull up是“停止”的意思。