Change the voice: "Did you catch the fly?"

Was the fly caught by you?

Is fly was caught by me?

Was the fly caught?

None of these

Active voice: "Did you catch the fly?" (past simple, interrogative)

Passive voice: Start with "Was" (since "fly" is singular and past tense is used)

"catch" → "caught" (past participle)

Subject "you" comes after "by"

Correct passive voice:

Was the fly caught by you?