The passer-by jumped into the cold water to save the boy who cried for help but it was

问题补充：

The passer-by jumped into the cold water to save the boy, who cried for help, but it was too late and the boy was at last.

A. drowning; drowned

B. drowned; drowning

C. drowning; drowning

D. drowned; drowned

答案：

(答案→)A. drowning; drowned

B. drowned; drowning

C. drowning; drowning

D. drowned; drowned

解析：形容词辨析。Drowning正在下沉的 drowned淹死的；句意：那位过路人跳进冰冷的水中区救那个正在下沉的呼救的男孩，但是太晚了，那个男孩最终还是淹死了。