I. Change the following sentences into the passive voice : 1. The government just widened the park last year . =>.................................................................................... 2. We consider national parks tdeal habitats for animals . =>............................................................................................. 3. They have just planted ten thousand trees in this area. =............................................................................................... 4. They are opening more national parks is this country . =>............................................................................................... 5. Do you think modern technology is destroying our nature ? =>..................................................................................................... 6. We stopped poaching completely after setting up this national park. =>...................................................................................................................... 7. No one has found out an effective way to protect endangered animals . =>............................................................................................................................. 8. Should any of us check the baby animals again ? =>.................................................................................... 9. The government must ban tusk sales to prevent poachers from killing elephants. =>............................................................................................................................................ 10. People have killed their tigers for skin and bones . =>........................................................................................... 11. We should use public transport means more as a way to protect the environment . =>................................................................................................................................................ 12. Somebody must have shot this poor rhino. =>............................................................................ 13. The government doesn't allow hunters in national parks . =>.................................................................................................... 14. With national parks , we have created safe places for animals and trees to live . =>.......................................................................................................................................... 15. They couldn't have killed the baby bear if it's mother hadn't been unconscious. =>...........................................................................................................................................