Answer:
Something is done by someone regularly / everyday / as expected...
Active : The gardener waters the flowers every evening.
Passive: The flowers are watered by the gardener every evening.
Active : Helen doesn't drink anything in parties.
Passive: Nothing is drunk by Helen in parties.
Active : Who sells umbrellas?
Passive: Who are umbrellas sold by?
Active : My mother doesn't paint the walls.
Passive: The walls aren't painted by my mother.
Hope this helped :)
