单项选择题
The ATMs enable bank customers to access their money 24 hours a day and seven days a week ______ ATMs are located.
单项选择题 A recent survey suggested that if money were not an issue, most mothers ______ not to work at all.
单项选择题 Effective prevention against physical harms has never been ______ urgently needed, especially in schools.
单项选择题 People who walk on the grass are ______ to a fine of $5.
