Привет! Давай разберём задание вместе. Нужно поставить глаголы в скобках в нужную форму времени. Давай посмотрим на каждый номер:
Yuri ….. (work) on his computer for two hours before it ….. (break down).
- Yuri had been working on his computer for two hours before it broke down.
I ….. (mop) the floor while my brother was cutting the grass.
- I was mopping the floor while my brother was cutting the grass.
You …… (sleep) when the earthquake ….. (happen)?
- Were you sleeping when the earthquake happened?
This time last week, I ….. (fly) to Paris.
- This time last week, I was flying to Paris.
Sam was really happy because he ….. (pass) all his exams.
- Sam was really happy because he had passed all his exams.
Sarah ….. (clean) the house by the time her parents ….. (come home).
- Sarah had cleaned the house by the time her parents came home.
James ….. (wait) for a while and then ….. (open) the door to see who ….. (make) the noise.
- James waited for a while and then opened the door to see who was making the noise.
Marion ….. (not/go) shopping because she ….. (spend) the morning with her little brother.
- Marion had not gone shopping because she spent the morning with her little brother.
Надеюсь, это поможет! Если что-то непонятно, пиши, обсудим.