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