They worked hard lest- A they could have pass the examination. B they could pass the examination. C they could fail in the examination. D they seould fail in the examination. They worked hard lest- Correct Answer they seould fail in the examination. Bissoy MCQ Team Jun 01, 2023 English Right Form of Verbs ক ইউনিট জাতীয় কবি কাজী নজরুল ইসলাম বিশ্ববিদ্যালয়