―What are you doing, Jack?
―I’m looking for some information about famous people can help me make a poster. .
A. who
B. what
C. whom
D. that
网友回答
A. who
B. what
C. whom
(答案→)D. that
解析：who谁；what什么；whom谁，宾格；that那个。本句中先行词为下文从句逻辑主语，指为前面整句话内容，故引导词用that，故选D。