The Beijing express had on time when we hurriedly got to the platform. A. pulled onB. pul

问题补充：

The Beijing express had on time when we hurriedly got to the platform.

A. pulled on

B. pulled out

C. pulled round

D. pulled off

答案：

A. pulled on

(答案→)B. pulled out

C. pulled round

D. pulled off

解析：pull out 出站“当我们匆忙到达月台的时候，北京的快车已经按时出站了。”