英语 高一 填空题 标准

定语从句的关系代词与关系副词 — 英语填空题

北师大版·英语 UNIT 5 HUMANS AND NATURE AI 三重审校通过

题目
将两句合并为一句,用关系副词填空:The explorers recorded the hour. The temperature began to fall at that hour. The hour ___ the temperature began to fall was recorded in their notes.