33–49. Заполните пропуски правильными формами глаголов, используя Past Simple и Past Perfect.

1. He wasn’t able to answer the question because he had not studied that topic before.
2. By the time I woke up, my brother had already left for school.
3. After they had understood the problem, they found a simple solution.
4. We were late because the bus had already departed before we reached the stop.
5. When Emma opened the cupboard, she noticed that someone had eaten the last packet of biscuits.
6. I wasn’t surprised by the news because I had already heard about it.
7. Before the meeting started, the manager had prepared all the necessary documents.
8. They weren’t able to take any photos because they had forgotten their camera at home.
9. After I had watched the film, I understood why everyone recommended it.
10. When the guests arrived, we had already prepared everything for the party.
11. She wasn’t able to find the restaurant because it had moved to another street.
12. By the time the firefighters arrived, the neighbours had already left the building.
13. I felt confident because I had done the same exercise several times before.
14. When we returned to the shop, it had already closed.
15. After James had saved enough money, he bought a new laptop.
16. They were hungry because they had missed lunch.
17. When the match started, the players had already walked onto the field.

Past Perfect обозначает действие, произошедшее раньше другого действия в прошлом.