Past simple:

The cake was eaten by the children.The car was repaired by the mechanic.The book was written by the author.

Past continuous:

The house was being built by the construction workers.The game was being played by the team.The movie was being filmed by the crew.

Present perfect:

The report has been finished by the employees.The package has been delivered by the courier.The dishes have been washed by the dishwasher.