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"Alright everyone in your seats," Betty said as her no-nonsense heels clicked across the front of the room to put a stack of papers on her desk. The college students reluctantly broke up their respective clicks and texting groups.

She puts her glasses on, milling through the bleacher type seats and desks to hand back graded papers. "If you did the extra credit assignment, now is a good time to hand it in. If you didn't, please refrain from doing so." There's a laugh that ripples through the students.