Задание 1 :
1. B
2. C
3. C
4. B
5. A
6. A
7. B
8. A
9. C
10. C
11. A
12. B
упражнение 2 :
1. was thanked
2. is repaired
3. has already been discussed
4. is being used
5. was walked
6. will have been done
упражнение 3 :
1. The new stadium is being built by them.
2. The delegation will be met by me at the station.
3. The teacher is always listened by pupils very attentively.
4. The text was being translated by the students when Peter came into the classroom.
5. A birthday party was organized by children for their friend.
6. The book has been read by me recently.