The teacher left a message for the students with chalk on the blackboard. School quarantine concept

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Size: 5000px × 3333px
Photo credit: © SERGEI CHAIKO / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: background, biohazard, blackboard, board, chalk, chalkboard, class, classroom, college, communication, concept, dangerous, disease, education, epidemic, hand, health, infection, medicine, message, prevent, protection, quarantine, school, teacher, text, virus, warning