英语 高二 选择题 较难 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 designer relied on three sources, the most useful _____ was a diary kept by a lighthouse keeper. A. of which B. which of C. of them D. whose 登录后查看答案与解析 用此考点生成试卷 本单元全部练习题 更多英语选择题