题目内容
4. I (watch) TV when I (hear) a knock at the door.
5. It's raining (heavy) outside.
4. was watching;heard 5. heavily
练习册系列答案
相关题目
题目内容
4. I (watch) TV when I (hear) a knock at the door.
5. It's raining (heavy) outside.
4. was watching;heard 5. heavily