英语 高二 选择题 标准

定语从句中介词+关系代词结构 — 英语选择题

沪外教版·英语(高中) 英语选择性必修 第一册 AI 三重审校通过

题目
Choose the correct option to complete the sentence: The volunteer program was a great success, ______ the mayor had devoted much of his spare time since last spring. A. to which B. in which C. for which D. on which