I want to try this out with a some simple questions
Change to active voice
1. The rock that broke the window had been through by steven
2. It is easy to tell where Julia is annoyed by Mark
3. The Rams had been thoroughly cleaned by Mara
4. The boy is being kept in a hidden place by the criminals
5. The man's table was destroyed by my dog when the children entered

To passive
1. The men took the clothes along with them
2. Have you finished the report
3. We have not seen him before