Active Voice: Who plays the harmonium?
Passive Voice: The harmonium is played by him.

Active Voice: Did you complete two courses?
Passive Voice: Two courses have been completed by her.

Active Voice: Does the boy ring the bell?
Passive Voice: The bell is rung by the boy.

Active Voice: Did someone make all the necessary arrangements?
Passive Voice: Have all the necessary arrangements been made by someone?

Active Voice: Is exercise taken daily by me?
Passive Voice: I take exercise daily.

Active Voice: Does he not watch movies?
Passive Voice: Movies are not watched by him.

Active Voice: Did someone pull the bull violently?
Passive Voice: The bull was pulled violently.