tolong ya change into passive

1. The elephant wasn't shot on the head (by the hunter) 
2. News hasn't been heard from our children abroad
3. The exercises in the notebook are being done 
4. Some parts of the temple was excavated last year. 
5. How to farm and raise animals effectively might be taught
6. His children should be taken to the zoo during vacation
7. gatau kepotong soalnya
8. A better job have been offered to me lately
9. The damaged road is reconstructed before the exodus 
10. The motorcycle was repaired (by mechanic) 

maaf lama, dan semoga dapat membantu