英语 九年级 填空题 较难 ★ 精品

by the time引导的从句 — 英语填空题

人教版·英语(初中) Unit 12 Life is full of the unexpected. AI 三重审校通过

题目
用括号内所给动词的适当形式填空:By the time the firefighters ______ (arrive) at the old building, the family ______ (escape) through the back door, so everyone was safe.