student arent allowed to smoke () drinkor还是and

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studentarentallowedtosmoke()drinkor还是andstudentarentallowedtosmoke()drinkor还是andstudentarentallowedt

student arent allowed to smoke () drinkor还是and
student arent allowed to smoke () drink
or还是and

student arent allowed to smoke () drinkor还是and
or
否定用or,肯定用and

or
否定句中不能用AND