祈使句表达建议与劝告 — 英语选择题

你的同学常忘记关灯和随手扔垃圾。你想用祈使句给他提建议，下面哪一句是正确的？A. Please turn off the lights and don't throw rubbish everywhere. B. Please to turn off the lights and not throw rubbish everywhere. C. Turn off the lights and don't to throw rubbish everywhere. D. Turning off the lights and not throwing rubbish everywhere.