I had fixed my bike by the evening
- My bike had been fixed by me by the evening.
Don't worry , somebody will find the lost dog
. - don't worry, the lost dog will be found by somebody.
Andy offered me a sandwich
. - A sandwich was offered me by Andy.
His parents will encourage him to look for a job. -He was encouraged to look for a job by his parents.
Have you switched off the TV set? - Have the TV set been switched off?