Past Simple Passive

The castle ___(build) in the 12th century.

The delicious cake ___(bake) by my grandmother yesterday.

The missing dog __(find) by the police last week.

The book ___( write) by a famous author, but its identity remains unknown.

The experiment ____ (conduct) carefully, but the results were inconclusive

The meeting __ (postpone) due to unforeseen circumstances.

The children __(entertain) by the clown's silly tricks

The letter ____(deliver) by a messenger on horseback.

The room ___(clean) thoroughly before the guests arrived.

The painting ___(discover) hidden in the attic for decades.