- I had been waiting at the cinema for an hour before Kim finally showed up.
- They had been playing football all day, so they were very tired in the evening.
- Had he finished making the lunch when the guests arrived?
- The band had been performing for an hour when the electricity went off.
- Belinda had been studying German for three years before she moved to Munich.
Ответ: had been waiting, had been playing, Had he finished, had been performing, had been studying.