Jimmy walks the dogs every day.
The dogs are walked by Jimmy every day.
The government will introduce new measures against crime.
New measures against crime will be introduced by the government.
We are going to announce the results on Friday.
The results are going to be announced on Friday.
A cup of tea... to me yesterday.
was offered
A gardener is watering the flowers.
The flowers are being watered by the gardener.
The flood....by heavy rain.
was caused/ has been caused
So far, some changes ... by the new manager.
So far, some changes have been made by the new manager.
Someone should help the old woman across the street.
The old woman across the street should be helped.
The secretary opens the mail every morning.
The mail is opened by the secretary every morning.
They had invited him to the cinema.
He had been invited to the cinema.
The evidence ...by police officers now. (EXAMINE)
The evidence is being examined by the police officers now.
Scientists might discover a new cure for cancer.
A new cure for cancer might be discovered (by scientists)