请选择CBA)P5\3y,f9T0U-AClasses are over. The students are ____________ now.7S,Z1g2V2n6M'p2I.E
A. having breakfast7S,Z1g2V2n6M'p2I.E
B. leaving school7S,Z1g2V2n6M'p2I.E
C. sitting down7S,Z1g2V2n6M'p2I.E