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Pensive professor thinking and touching chin on yellow background
African american professor providing instruction to diverse girls
Surprised senior professor looking sideways with shocked face expression
Cheerful senior professor holding a pen and smiling on blue background
Young indian male professor with a beard in glasses and formal clothes is looking down thoughtfully
Young indian male professor with a beard in glasses and formal clothes is looking down thoughtfully
Young indian male professor with a beard in glasses and formal clothes is looking down thoughtfully
Headshot of stupefied male professor leans head on table, has surprised facial expression, wears eye
Young woman student having classes, learning online, watching lesson remotely
