You can never know ____ he is really aimed at.

You can never know ____ he is really aimed at.
A、what
B、how
C、why
D、who
【正确答案】：A
【题目解析】：本题考查复合句。be aimed at: 目标是，目的是。从语法结构来分析，what是at 的宾语，what he is really aimed at 作know 的宾语。