The passive voice form of "We built the well yesterday."
The well was built yesterday.
"I saw a school yesterday" he said.
He said that he had seen a school the day before
The mouse was seen by us.
"I think I will see someone flying a kite tomorrow" he said.
He said that he thought that he will see someone flying a kite the day after.
We synchronized the clocks.
The clocks were synronichzed by us.
The passive voice of "We improved the school".
The school was imporved by us.
"Let's improve the school" they said.
They suggested we improve the school.
The kite was flown by us.
"It is great" we said.
We said that is was great.
We checked the time.
The time was checked by us.
We went to school.
No passive voice form exists.
"He said that he had seen a crow crossing the road", they said.
They said that he had said that the had seen a crow crossing the road.
We drove the car.
The car was driven by us.
"I went to school today" she said.
She said that she went to school today.
I started the stopwatch.
The stopwatch was started by me.