teacher preparing for university exams professor holding book and pointing college lecture |
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| navigate by keyword : academic adult aged blackboard book caucasian chalkboard class classroom college copyspace education educator elderly exam exams expert grandfather handsome holding indoor intelligent knowledge learn learning lecture lecturer lesson man mentor occupation old oldage pointing portrait preparing professor retirement school science seminar senior study studying suit teach teacher teaching tutor university |
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| Teacher preparing for university exams. Professor holding a book and pointing. Teacher in college on university lecture |
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