---I hear that Lily’s brother is a worker here.
---Look! The man is working over there is her brother.
A. who
B. /
C. what
D. which
网友回答
(答案→)A. who
B. /
C. what
D. which
解析：句意：我听说莉莉的哥哥是这儿的一个工人。——看，正在那边工作的男人就是她的哥哥。结合语境可知下文中先行词the man为定语从句中的逻辑主语，指人，故引导词用who，选A。