. 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. 查看更多

 

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