题目

题型：不详难度：来源：

Gun control is a subject ______ Americans have argued for a long time.

A．of which

B．with which

C．about which

D．into which

答案

C

解析

考查定语从句，先行词是Gun control，指物，关系词在从句中做介词的宾语，介词前置，介词与从句动词构成搭配argue about sth，选C。