Change the Active Constructions into Passive ones :1)We received this letter after his departure.2)Have the dogs ever attacked you?3)The man is selling chocolate and ice-cream.4)Bees gather honey from flowers.5)They have told Steve about this.6)They brought the piano into the room.7)You see,the storm is driving the ship against the rock.8)The little boy will show you the way.9)He teaches pupils many useful things.10)Who discovered the circulation of blood?11)I caught him.12)Electricity moves machines.