祈使句的肯定与否定形式 — 英语选择题

下列句子中，将陈述句正确转换为祈使句的是（　　） A. You can't eat in class. → Don't eat in class. B. You must do your homework. → Doesn't do your homework. C. You can't run in the hallways. → Run in the hallways, please. D. You have to be quiet. → To be quiet, please.