79. This machine must not be used after 5.30 p.m. September 17, 2025 by Admin A. You can’t use the machine after 5.30 p.m. B. You mayn’t use the machine after 5.30 p.m. C. You need not use the machine after 5.30 p.m. D. You must not use the machine after 5.30 p.m. ✅ The correct answer is option D.
