---I hear that Lily’s brother is a worker here.---Look! The manis working over there is he

问题补充：

---I hear that Lily’s brother is a worker here.

---Look! The manis working over there is her brother.

A. who

B. /

C. what

D. which

答案：

(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。