Объяснение:
2. they were talking when they saw the accident
3. she was listening to music when she fell in the living room
4. when he heard
5. were having
6. were walking
ответы:
1) -
2) saw
3) fell
4) heard
5) were having
6) were walking
Объяснение:
Действие в Past Continuous прерывается с Past Simple.