The passive form of "Who killed the bird?" is: A Who was killed the bird? B By whom the bird was killed? C Who was the bird killed by? D By whom was killed the bird? The passive form of "Who killed the bird?" is: Correct Answer By whom was killed the bird? Bissoy MCQ Team Jun 04, 2023 English রাজশাহী বিশ্ববিদ্যালয় Passive voice A ইউনিট : 2018-2019