Давайте перепишем предложенные вами предложения, используя правильное пассивное время для глаголов в скобках. В пассивном залоге акцент смещается на объект действия, и это важно учитывать при изменении времени. Вот шаги, которые мы будем следовать:

1. Love stories (always/sell) well.
   Love stories are always sold well.
2. The 'Mona Lisa' (paint) by Leonardo da Vinci.
   The 'Mona Lisa' was painted by Leonardo da Vinci.
3. Nothing (decide) before next Saturday.
   Nothing will be decided before next Saturday.
4. An office block (build) near our school.
   An office block is being built near our school.
5. At 6 o'clock the floor (still/polish).
   At 6 o'clock the floor was still being polished.
6. The letters (not/type) yet.
   The letters have not been typed yet.
7. When he returned to the city the stadium (already/build).
   When he returned to the city the stadium had already been built.
8. This road (never/clean).
   This road has never been cleaned.
9. This purse (leave) in the classroom yesterday.
   This purse was left in the classroom yesterday.
10. Today's post (not/bring) yet.
    Today's post has not been brought yet.
11. Your order (send) as soon as possible.
    Your order will be sent as soon as possible.
12. The hole in the roof (repair) when I came home.
    The hole in the roof was being repaired when I came home.
13. When (this church/build)?
    When was this church built?
14. When (you/tell) about the new rules?
    When were you told about the new rules?
15. I (not/invite) to parties.
    I am not invited to parties.
16. How (this word/pronounce)?
    How is this word pronounced?
17. We (wake) by a loud noise at night.
    We were woken by a loud noise at night.
18. How much money (steal) in the robbery?
    How much money was stolen in the robbery?
19. As I drove south, I could see that the old road (rebuild).
    As I drove south, I could see that the old road was being rebuilt.
20. Harry (question) by the police about the accident.
    Harry was questioned by the police about the accident.
21. Your drinks (bring) in a moment.
    Your drinks will be brought in a moment.
22. When we arrived we found that one of the windows (break).
    When we arrived we found that one of the windows had been broken.
23. The suitcases (pack) by the time the taxi comes.
    The suitcases will have been packed by the time the taxi comes.
24. Some building work (do) in Park Avenue.
    Some building work is being done in Park Avenue.

Теперь все предложения переписаны с использованием правильного пассивного времени. Если у вас есть вопросы или вам нужно больше пояснений, не стесняйтесь задавать их!