Odpowiedź:
1. An experiment is carried out every month by us.
2. This part is installed on the roof by them.
3. The political articles aren't published by him.
4. That button wasn't pessed by her friends.
5. It isn't touched in the laboratory by me.
6. The instructions are always followed by you.
7. That building was constructed in 2003 by him.
8. This medicine is used in Africa by them.
9. This element wasn't discovered in 1980 by her.
10. Five books are read a moth by them.
Mam nadzieję, że dobrze :)