Keywords
50s, alert, alertness, answering question, asking question, campus, cheerful, class, classroom, college, color, colour, confidence, confident, desk, education, evening class, fifties, folder, grey education, group, hand raised, happy, higher learning, hispanic, image, indoors, learning, lesson, man, mature student, middle aged, one person, paper, papers, pen, pencil, question, senior, sitting, smiling, solution, student, studying, together, university, vertical, working, stock image, images, royalty free photo, stock photos, stock photograph, stock photographs, picture, pictures, graphic, graphics, fine art prints, print, poster, posters, mural, wall murals, u10502783