He had written the book before he_____. A retired B had retired C was retired D will be retired He had written the book before he_____. Correct Answer retired Bissoy MCQ Team May 29, 2023 English Identifying Missing Word G ইউনিট বঙ্গবন্ধু শেখ মুজিবুর রহমান বিজ্ঞান ও প্রযুক্তি বিশ্ববিদ্যালয়