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
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
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
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
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
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
Young woman learning while attending adult education training class in lecture hall
Male student wearing face protective medical mask for virus protection at lecture hall
Mid adult professor with a face mask holding a class to his students at lecture hall.
Rear view of African American student raising hand during a class in lecture hall.
Female instructor wearing face protective mask and helping male student at lecture hall
Mid adult black student writing an exam while attending a class at lecture hall.
Mature student raising his hand to ask a question during a class at lecture hall.
Black teacher talking to adult students during education training class in lecture hall.
Black senior man communicating with female classmate during educational class in lecture hall.
