Use Passive Voice: Present Simple, Past Simple or Present Perfect. Раскройте скобки в страдательном залоге настоящего простого, прошедшего простого или настоящего совершенного времени.
1. We often (to invite) to a concert.
2. Many houses (to build) in our town last year.
3. Letters just (to post) by her.
4. Hockey (to play) in winter.
5. A lot of animals (to kill) every year.
6. The books already (to take) back to the library.

Passive Voice (страдательный залог):

1. We often are invited to a concert.
   (Нас часто приглашают на концерт.)
   Present Simple Passive: am/is/are + V3

2. Many houses were built in our town last year.
   (Много домов было построено в нашем городе в прошлом году.)
   Past Simple Passive: was/were + V3

3. Letters have just been posted by her.
   (Письма только что были отправлены ею.)
   Present Perfect Passive: have/has + been + V3

4. Hockey is played in winter.
   (В хоккей играют зимой.)
   Present Simple Passive: am/is/are + V3

5. A lot of animals are killed every year.
   (Много животных убивают каждый год.)
   Present Simple Passive: am/is/are + V3

6. The books have already been taken back to the library.
   (Книги уже были возвращены обратно в библиотеку.)
   Present Perfect Passive: have/has + been + V3

Ответы:

1. are invited

2. were built

3. have just been posted

4. is played

5. are killed

6. have already been taken