The tall boy you just met is my brother.A. whoB. whichC. whereD. when

问题补充：

The tall boy you just met is my brother.

A. who

B. which

C. where

D. when

答案：

(答案→)A. who

B. which

C. where

D. when

解析：句意：你刚才遇到的高个男孩是我的哥哥。本句中先行词The tall boy为从句逻辑主语，故引导词用who，选A。