问题
选择题
They are talking excitedly about the writers and their books ________ interest them.
A．who
B．whom
C．that
D．Which
答案
答案：C
题目分析：此处the writers and their books是先行词，先行词既有人又有物，因此用关系代词that。这里that在定语从句作主语。句意：他们正在激动地谈论使他们感兴趣的作者和他们的书。