Female student wearing face protective medical mask for virus protection standing at lecture hall
Black teacher talking to senior man during adult education training class in lecture hall.
Female instructor wearing face protective medical mask and helping male student at lecture hall
Mature teacher giving his adult students exam papers during a class at lecture hall.
Black professor teaching group students during adult education training course in lecture hall.
Black senior man paying attention during adult educational training class in lecture hall.
Black senior student man writing while attending adult education class in lecture hall.
Happy student communicating with his friend while wearing face mask on a class in lecture hall.
Online lesson male student studying at college uses a laptop, video chat, sits in a lecture hall
Online lesson male student studying at college uses a tablet, video chat, sits in a lecture hall
Online lesson male student studying at college uses a laptop, video chat, sits in a lecture hall
Rear view of black student raising her hand to answer a question during a class at lecture hall.
Pretty young student in casualwear looking at you while sitting by long wooden desk in lecture hall
cheerful businesssman waiting for business lecture in conference hall
Anonymous audience listens to the speech of the lecturer in the conference hall
Anonymous audience listens to the speech of the lecturer in the conference hall
multiracial business colleague discussing lecture in conference hall
side view of businesswoman with notepad waiting for lecture in conference hall
smiling business colleagues before business lecture in conference hall
attractive, confident lecturer holding on podium tribune in conference hall
lecturer pointing at white board during presentation in conference hall
smiling business colleagues before business lecture in conference hall
attractive lecturer looking at assistant during seminar in conference hall
side view of businesswoman with notepad waiting for lecture in conference hall
Selective focus on microphone stands on the conference hall for communicating with the lecturer
serious lecturer holding glasses while standing on podium tribune in conference hall
smiling lecturer standing at podium tribune during seminar in conference hall
attractive lecturer pointing on multicultural audience during seminar in conference hall
smiling lecturer standing at white board during presentation in conference hall
attractive lecturer leaning on podium tribune during seminar in conference hall
