Answer:
1. My purse has been found by one of the cleaners
2. He was hit on the head with a hammer by the robber
3. A new road has been built in this area by the goverment
4. I was handed a note by the assistant
5. John was elected class representative by us
6. My wallet has been taken by someone
7. Bicycles are used as a means of transport by many people
8. I was advised to get a visa by them
9. The old road was being built by them when I was drop by
10. A new shopping centre was opened by the local council
11. Anything haven't been decided by them yet
12. The new stadium was being slowly filled by the crowd
13. I don't know to do it
14. A knife was used to open the window by Dad
15. Your drink will be bring you by the waitress in a minute
16. Anything of John ever heard by nobody again
Explanation: