安全用电提示类写作 — 英语选择题
题目
学校要制作安全用电提示卡。根据“清洁电风扇前”的情境，选出最合适的英文内容补全提示：Before cleaning an electric fan, ____. A. switch it off and unplug it first B. keep it running to check the blades C. pour water on it to remove the dust D. pull the plug out by its cord