一．选择题。
1. I ______ a meal when you _____ me.
a. cooked, were ringing b. was cooking, rang c. was cooking, were ringing d. cooked, rang
3. While she ______ TV, she ______ a sound outside the room.
a. was watching, was hearing b.watched, was hearing c. watched, heard d. was watching, heard
4. They _____ a football game from 7 to 9 last night.
a. were watching b. watch c. watched d. are watching