Passive→active peter will build a house. they will film the monster. they will feed the chickens. they will eat lunch at 12 o’clock. she will put the homework on the table. they will replace the old robot.

A House will be built by Peter
The monster will be filmed
The chickens will be fed
Lunch will be eaten at 12 o'clock
The homework will be put on the table
The old robot will be replaced