Who’s the middle-aged man I shook hands with _________ at the bus stop just now?是选择题A、 himB、 whoC、 whomD、 不填请说明理由.

Who’s the middle-aged man I shook hands with _________ at the bus stop just now?
是选择题
A、 him
B、 who
C、 whom
D、 不填
请说明理由.

D
I shook hands with the middle-aged man.
(前面已经有了提问词who,不需要再用其他词来替代了）

C

对，是D,语感比较好