Составить предложения в пассивном залоге и в активном залоге со словами post office, bank, police station

We receive letters in a post office.

Letters are received in a post office.

He got a credit card in the bank.

A credit card was got in the bank by him.

Policemen have brought a robber to the police station.

A robber has been brought to the police station by policemen.