Do you know the girl is in red?- Yes she is my friend Kate.A. which B. who C. Wh

问题补充：

--- Do you know the girl is in red?

--- Yes, she is my friend, Kate.

A. which B. who C. Whom

答案：

解析：句意为;---你认识穿红色衣服的女孩吗？认识。她是我的朋友凯特。在定语从句中，引导词在从句中充当主语，所以选择who，但是如果前面有介词则应用whom，比如说：Lily is my best friendwith whom I spent my happy childhood.which的先行词指物。故应选Ｂ。