提醒和劝告的表达方式 — 英语选择题
题目
Tom 正要过马路时，红灯还亮着，但他看见朋友们已经在马路对面等他，想跑过去。妈妈想提醒他不要这样做，下面哪一句最恰当？A. Don't run across the road when the light is red. B. Please run across the road quickly. C. Let's play football after school. D. Don't forget to take your umbrella.