--- He went to see the man who was in hospital yesterday.--- .A. So did he B. So he did C.

问题补充：

--- He went to see the man who was in hospital yesterday.

--- .

A. So did he

B. So he did

C. He did so

D. Did so he

答案：

A. So did he

(答案→)B. So he did

C. He did so

D. Did so he

解析：考查倒装结构。So + 主语 + 助动词，表示的确如此。句意：——他昨天去看望在医院的那个人。——他的确去了。