The careless driver knocked down the old man was crossing the road.A. whoB. whomC. whoseD

问题补充：

The careless driver knocked down the old man was crossing the road.

A. who

B. whom

C. whose

D. which

答案：

(答案→)A. who

B. whom

C. whose

D. which

解析：考查定语从句。本题定语从句的先行词是the old man, 关系代词who指代the old man作为句子的主语。句意：那位粗心的司机把那个横穿马路的老人撞倒了。故A正确。