During the past 30D, on how many D did you drink one or more drinks of an alcoholic beverage
during the past 30d, on how many d did you drink one or more drinks of an alcoholic beverage
During the past 30 days, on how many days did you drink one or more drinks of an alcoholic beverage
during the past 30 days, on how many days did you drink one or more drinks of an alcoholic beverage