مجهول جمله ی " Did they finish their homework "

Here's a breakdown of the transformation:

Subject ("they"): Since the focus is not on who finished the homework, the subject is omitted in the passive voice.

Main Verb ("finish"): The past participle of "finish" is "finished."

Object ("their homework"): The object "their homework" remains the same in the passive voice.

Auxiliary Verb ("did"): In passive voice questions, the auxiliary verb "be" is conjugated according to the tense of the original sentence ("did" in this case, which becomes "were" in the past tense).

Note: This passive voice sentence sounds slightly less natural than the original active voice sentence. Here are some other options depending on the context:

"Has their homework been finished?" (This emphasizes the current state of the homework being finished or not.)

"Did someone finish their homework?" (This removes the focus on "they" specifically.)