You must sign guests out when they leave the club.
客人离开俱乐部时，你必须为他们签退。
You must turn in your pass when you leave the building.
你离开大楼时必须交还通行证。
You must leave your full name and contact details when you phone.
你打电话时必须留下自己的完整姓名及用于联络的详细资料。
Workers in a factory must clock out when they leave.
工厂工人离厂时必须记录下班时间。
When the fathers leave, the mothers must bring up the children alone.
孩子的父亲离开后，母亲要独自带大孩子。
You must turn in the key when you leave the hotel.
你离开旅馆时一定要归还钥匙。
All the computers must be shut down when you leave.
你离开时必须把所有的计算机关掉。
When they leave school, they must go on to learn.
当他们离开学校时，他们还需要继续学习。
You must close the windows when you leave the classroom.
你离开教室时一定要关好窗户。
Don't put the napkin on the table when you must leave during the meal.
（如果吃饭时要离开一下，要把餐巾放在椅子上，而不是桌子上）田田问Why？
Don't put the napkin on the table when you must leave during the meal.
（如果吃饭时要离开一下，要把餐巾放在椅子上，而不是桌子上）田田问Why？
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