Ответ:

1. They were walking in the park when the storm broke.

2. The man paid for his new car in cash.

3. I had already eaten breakfast by the time the others woke up.

4. It had been snowing for three days when suddenly the sun came out.

5. Sam had been working here for six years before he left to go university.

6. Liz went to the Bahamas for her holidays last year.

7. We were watching a film when our guests arrived.

8 They had already seen the film twice at the cinema when she rented it on video.

9. The teacher taught the children a song yesterday.

10. He was sitting on the train at this time yesterday morning.

Объяснение:

вроде бы правильно но я не уверена