Question

【题目】Gun control is a subject ________ Americans have argued for a long time.
A.of which
B.with which
C.about which
D.into which

Answer 1

【答案】C
【解析】句意：枪支控制是美国人争论很久了的一个主题。先行词是subject，指物，根据定语从句中动词argue可知，argue构成搭配argue about sth.，所以答案是C。