组卷网 > 高中英语综合库 > 语法 > 句法 > 复合句 > 定语从句 > 限制性定语从句 > “介词+关系代词”引导限制性定语从句
题型:单项选择 难度:0.65 引用次数:517 题号:10098096
The president of Harvard pioneered the elective system______ students were able to choose their own courses of study.
A.on whichB.about whichC.to whichD.by which
19-20高三下·江苏南通·阶段练习 查看更多[5]

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