Steve Jobs’ success in digital field proved it took to be a best CEO.
A. what
B. which
C. that
D. how
网友回答
(答案→)A. what
B. which
C. that
D. how
解析：考查宾语从句：句意：斯蒂夫乔布斯的成功证明了要想成为最好的CEO需要什么。Prove后面是宾语从句，宾语从句中take缺少宾语，用what连接，which“哪个”，that在从句中不做成分，how怎样，不符合句意。选A。