[1] Пассивный залог Раскройте глаголы в скобках в правильной форме. 1 A lot of buildings (ruin) during the war. 2 I (to give) a very interesting book at the library to make a report on the topic of Victory Day. 3 The Immortal Regiment (join) by more and more people every year. 4 The students (ask) to help the elderly veterans. 5 Moscow (attack) by the Nazis many times. 6 Many people (kill) and (injure) during the war. 7 Every year in spring flowers (put) to the monuments to honour the memory of the war heroes. 8 The preparations (arrange) for the 75th Anniversary of Victory Day now. 9 Victory Day already (celebrate) for 75 years. 10 The monuments (reconstruct) at the moment..

1. A lot of buildings were ruined during the war. (Во время войны много зданий было разрушено)
To form the passive voice, we use the past participle of the verb "ruin" and the auxiliary verb "be" in the past tense (were).

2. I was given a very interesting book at the library to make a report on the topic of Victory Day. (Мне была выдана очень интересная книга в библиотеке, чтобы я сделал отчет по теме Дня Победы)
In this sentence, the verb "give" is in the past tense and the object "a very interesting book" becomes the subject in the passive voice. The auxiliary verb "be" is used in the past tense (was) and the past participle of "give" (given) is used.

3. The Immortal Regiment is joined by more and more people every year. (Каждый год к "Бессмертному полку" присоединяется все больше и больше людей)
In this sentence, the verb "join" is in the present tense, and we use the passive voice by using the present tense of the verb "be" (is) and the past participle of "join" (joined).

4. The students are asked to help the elderly veterans. (Студентов просят помогать пожилым ветеранам)
Here, the verb "ask" is in the present tense. We use the passive voice by using the present tense of the verb "be" (are) and the past participle of "ask" (asked).

5. Moscow was attacked by the Nazis many times. (Москва была атакована нацистами много раз)
The verb "attack" is in the past tense. We use the passive voice by using the past tense of the verb "be" (was) and the past participle of "attack" (attacked).

6. Many people were killed and injured during the war. (Много людей было убито и ранено во время войны)
Both the verbs "kill" and "injure" are in the past tense. We use the passive voice by using the past tense of the verb "be" (were) and the past participle of both verbs (killed and injured).

7. Every year in spring, flowers are put to the monuments to honor the memory of the war heroes. (Каждую весну к монументам кладут цветы, чтить память героев войны)
The verb "put" is in the present tense. We use the passive voice by using the present tense of the verb "be" (are) and the past participle of "put" (put).

8. The preparations are being arranged for the 75th Anniversary of Victory Day now. (Сейчас проводятся подготовительные работы к 75-й годовщине Дня Победы)
In this sentence, the verb "arrange" is in the present continuous tense. We use the passive voice by using the present continuous tense of the verb "be" (are being) and the past participle of "arrange" (arranged).

9. Victory Day has already been celebrated for 75 years. (День Победы уже отмечается 75 лет)
The verb "celebrate" is in the present perfect tense. We use the passive voice by using the present perfect tense of the verb "be" (has been) and the past participle of "celebrate" (celebrated).

10. The monuments are being reconstructed at the moment. (Монументы сейчас реконструируются)
The verb "reconstruct" is in the present continuous tense. We use the passive voice by using the present continuous tense of the verb "be" (are being) and the past participle of "reconstruct" (reconstructed).
So, these are the correct forms of verbs in the passive voice for each sentence.