Coca Cola has sponsored this programme.
This programme has been sponsored by Coca Cola
The manager has locked the door.
The door has been locked by the manager.
The organizers of the event welcomed the president.
The president was welcomed by the organizers.
The farmer milks the cows twice a day.
The cows are milked twice a day.
The referee will stop the match if the weather gets worse.
The match will be stopped if the rain gets worse.
