It became clear to me at the end of the interview they really cared about.A. whichB. howC

问题补充：

It became clear to me at the end of the interview they really cared about.

A. which

B. how

C. that

D. what

答案：

A. which

B. how

C. that

(答案→)D. what

解析：句意:我清楚了在面谈结束时,他们真正关心的。it是形式主语，what they really cared about是真正的主语从句，cared about后面缺少宾语，表示关心的内容，用What充当cared about的宾语。故选 D. What考点：考查名词性从句的用法。