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】

试题分析：句意：枪支的控制是美国人争论了好长时间的话题。这里使用了定语从句，先行词是subject，关系代词前用什么介词要取决于本句中的“argue”。argue about sth.选C。