serious adult teacher is giving lecture for students with book in the class.

• academic, academy, audience, blackboard, book, classroom, college, course, discussion, education, explain, female, girl, group, indoors, information, institute, instructor, knowledge, learning, lecture, lecturer, lesson, listeners, male, man, person, presentation, professional, professor, room, rostrum, school, seminar, session, speaker, speech, spokesperson, stand, student, study, talking, teach, teacher, training, university, workshop, young
• ID: 1331087942
• Model: 27260596 21728492 22703191 23170108 20605216 23095216
• 5472 x 3507 pixels