---Who's the man ---which man?The one(is standing,standing)in front.选哪个

---Who's the man ---which man?The one(is standing,standing)in front.选哪个
---Who's the man ---which man?The one(is standing,standing)in front.选哪个

---Who's the man ---which man?The one(is standing,standing)in front.选哪个
选择standing,这里是省略了who is 的定语从句