情态动词 should 表达义务与建议 — 英语词汇题
题目
情景选择：Tom 经常忘记随手关水龙头，还很长时间开着电冰箱门。妈妈想提醒他改正这些浪费行为。请你选择最恰当的一句：A. You should keep the water running and open the fridge. B. You shouldn't waste water or keep the fridge door open for a long time. C. You should turn on more lights to save energy.