过去进行时的构成与用法 — 英语词汇题
题目
根据句意，用所给动词的适当形式填空，使句子表达过去某一时刻正在进行的动作。
1. The rain started at 6:00 and stopped at 7:00. At 6:45, it ________ (rain) heavily.
2. — ________ you ________ (do) your homework at nine last night?
— Yes, I was. My mother was cooking in the kitchen then.