Answer:
The passive voice of "Who was making a kite?" is "A kite was being made by someone."
To change a sentence from active voice to passive voice, you need to do the following:
- Move the object of the sentence to the subject position.
- Make the verb into a past participle.
- Add the word "by" and the agent of the action.
In this case, the object of the sentence is "kite." The verb is "making." The agent of the action is "someone."
So, the passive voice sentence would be:
A kite was being made by someone.
The passive voice can be used to focus on the action rather than the person who is doing the action. It can also be used to make the sentence more formal.