使用should表达应该做的事 — 英语选择题
题目
校园艺术节前，老师提醒同学们遵守规则。Lily手里有垃圾，教室门口没有垃圾桶（bin），走廊尽头有一个。她应该怎么做？用should选出正确的句子：A. You should throw the rubbish（垃圾）on the floor. B. You should walk to the bin and throw the rubbish in it. C. You should run in the hallway. D. You should leave the rubbish on the desk.