Ответ:
1) When Sara arrived at the party, Paul went home.
2) The teacher had explained the task by the time I arrived at the class.
3) The show had finished by the time I arrived.
4) The cat killed the mouse after she had played with it for some time.
5) Peter passed the driving test because he had practiced a lot for it.
6) I stayed at home last night because Dad had promised to play chess with me.
7) I finished eating/had finished dinner when you called yesterday.
8) My favorite television program had finished before I turned the TV on.
9) I had completed the test before I realized that I was in the wrong class.
10) The house was dirty – they had not cleaned it for weeks.
Объяснение: