Odpowiedź:
1. 1st action: The opera had finished
2nd action: we went out for dinner
2. 1: the play had started
2: we arrived at the theatre
3. 1: I had hurt my knee
2: i couldn't take part in the marathon
4. 1: they had taken down the circus tent
2: when we got to the park
5. 1: my friend had bought tickets for the ballet
2: they sold out
