—What’re you doing Jack?—I’m looking for some information about famous people I need to

问题补充：

—What’re you doing, Jack?

—I’m looking for some information about famous people I need to make a poster.

A. who

B. what

C. whom

D. which

答案：

A. who

B. what

C. whom

(答案→)D. which

解析：句意：杰克，你正在做什么？我在寻找我需要制作海报的名人的信息。定语从句用来充当句中定语的结构，被修饰的名词叫先行词，连接主从句的是关系词。关系词分：1关系代词：who , whom , whose , which , that。2关系副词：where,when why 等。一般的who 用于指代人的先行词，which 用来指代物的先行词，that既可指认又可指物该句中的先行词是information，故引导词用D。