Writing male student taking notes in notebook at university lecture hall, with pen and smartwatch
Female instructor wearing face protective mask and helping male student at lecture hall
Two intercultural female students sitting by desk in lecture hall and discussing passage in book
Male student wearing face protective medical mask for virus protection at lecture hall
Male student wearing face protective medical mask for virus protection at lecture hall
Female student wearing face protective medical mask for virus protection at lecture hall
Female student wearing face protective medical mask for virus protection at lecture hall
Female student wearing face protective medical mask for virus protection at lecture hall
Female student wearing face protective medical mask for virus protection at lecture hall
Female student wearing face protective medical mask for virus protection at lecture hall
Male student wearing face protective medical mask for virus protection at lecture hall
Female student wearing face protective medical mask for virus protection at lecture hall
microphone on stage in business seminar, speech presentation, town meeting, lecture hall, conference
Male student wearing face protective medical mask for virus protection at lecture hall
Female student wearing face protective medical mask for virus protection at lecture hall
Male student wearing face protective medical mask for virus protection at lecture hall
Male student wearing face protective medical mask for virus protection at lecture hall
Male student wearing face protective medical mask for virus protection at lecture hall
Female student wearing face protective medical mask for virus protection at lecture hall
Female student wearing face protective medical mask for virus protection at lecture hall
Contemporary young intercultural students sitting by desks in lecture hall and using mobile gadgets
Female student wearing face protective medical mask for virus protection at lecture hall
frightened lecturer breathing into paper bag while sitting on floor in conference hall and suffering
Female student wearing face protective medical mask for virus protection at lecture hall
Male student wearing face protective medical mask for virus protection at lecture hall
Female student wearing face protective medical mask for virus protection at lecture hall
Female student wearing face protective medical mask for virus protection at lecture hall
Female student wearing face protective medical mask for virus protection at lecture hall
a male caucasian person sitting and feeling tired in the lecture hall auditorium, overworking stress
Female student wearing face protective medical mask for virus protection at lecture hall
