分类：教育/科学-学习帮助
问题：高二中译英一句，翻错没关系，在线等！你一定要保证所有的灯都关了， 
你一定要保证所有的灯都关了，然后才可以离开教室
回答：Make sure that all lights are turned off before you leave the classroom.
或 you can not leave the classroom until you are sure that all light are turned off.
关灯的关只能用turn off或switch off，决不能用shut或close.