过去进行时 — 英语词汇题
题目
用括号内动词的适当形式填空：
1. When the phone rang, Tom ________ (read) a book in his room.
2. They ________ (play) basketball at four o'clock yesterday afternoon.
3. While my mother ________ (cook), I was doing my homework.
4. What ________ you ________ (do) when the rainstorm came?