On the chairs who had come here for this job interview.A. did three graduates sitB. sat

问题补充：

On the chairs, who had come here for this job interview.

A. did three graduates sit

B. sat three graduates

C. three graduates sat

D. sitting three graduates

答案：

A. did three graduates sit

(答案→)B. sat three graduates

C. three graduates sat

D. sitting three graduates

解析：

这题考查倒装句的用法，地点状语提前时，用完全倒装，即把谓语动词提到主语前面，选B。句意是：椅子上坐着三个毕业生，他们是来这儿面试的。