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    Teacher calling on students with hands raised in adult education classroom — Stock Photo
    Teacher calling on students with hands raised in adult education classroom
    Female speaker with microphone in wheelchair on stage — Stock Photo
    Female speaker with microphone in wheelchair on stage
    Male teacher calling on students in classroom — Stock Photo
    Male teacher calling on students in classroom
    High school students with hands raised asking questions during lesson in classroom — Stock Photo
    High school students with hands raised asking questions during lesson in classroom
    African american students raising hands in class — Stock Photo
    African american students raising hands in class
    Student asking query to the trainer in training institue — Stock Photo
    Student asking query to the trainer in training institue
    High school students with hands raised during lesson in classroom — Stock Photo
    High school students with hands raised during lesson in classroom
    Businesswoman in audience asking question at business conference — Stock Photo
    Businesswoman in audience asking question at business conference
    Conference audience with hands raised for speaker on stage — Stock Photo
    Conference audience with hands raised for speaker on stage
    Teacher and students with hands raised in adult education class — Stock Photo
    Teacher and students with hands raised in adult education class
    High school teacher calling on students during lesson in classroom — Stock Photo
    High school teacher calling on students during lesson in classroom
    Female business executive giving a speech at conference center — Stock Photo
    Female business executive giving a speech at conference center
    Teacher and students on campus — Stock Photo
    Teacher and students on campus
    Cute little girl standing looking at camera with a blackboard as a bac — Stock Photo
    Cute little girl standing looking at camera with a blackboard as a bac
    Girl raising hand in classroom — Stock Photo
    Girl raising hand in classroom
    Man gesturing with wine at party — Stock Photo
    Man gesturing with wine at party
    Businesswoman asking question in conference audience — Stock Photo
    Businesswoman asking question in conference audience
    Side view of a cute little blonde girl erasing the blackboard with an — Stock Photo
    Side view of a cute little blonde girl erasing the blackboard with an
    Strong man raising barbell with euro coins for weights — Stock Photo
    Strong man raising barbell with euro coins for weights
    Schoolgirl raising hand — Stock Photo
    Schoolgirl raising hand
    High school students with hands raised during lesson in classroom — Stock Photo
    High school students with hands raised during lesson in classroom
    Junior high school student raising hand, asking a question during lesson in classroom — Stock Photo
    Junior high school student raising hand, asking a question during lesson in classroom
    Female business executive giving a speech at conference center — Stock Photo
    Female business executive giving a speech at conference center
    Mother helping children with homework in kitchen at home — Stock Photo
    Mother helping children with homework in kitchen at home
    Worried senior woman sitting in bedroom holding medicine and talking on mobile phone — Stock Photo
    Worried senior woman sitting in bedroom holding medicine and talking on mobile phone
    Crop forearm and hand of african-american man raising his index finger against yellow background — Stock Photo
    Crop forearm and hand of african-american man raising his index finger against yellow background
    Girls and boys in a classroom — Stock Photo
    Girls and boys in a classroom
    Rural teacher and pupils in outdoor learning — Stock Photo
    Rural teacher and pupils in outdoor learning
    Teacher explaining to junior high students — Stock Photo
    Teacher explaining to junior high students
    Security guard asking in the passenger to stop for the security check-in the airport terminal — Stock Photo
    Security guard asking in the passenger to stop for the security check-in the airport terminal
    Eager audience asking questions — Stock Photo
    Eager audience asking questions
    Group of school kids wearing protective mask to Protect Against Covid-19 with teacher sitting in classroom,education,elementary school,Social Distancing,learning and people concept. — Stock Photo
    Group of school kids wearing protective mask to Protect Against Covid-19 with teacher sitting in classroom,education,elementary school,Social Distancing,learning and people concept.
    Rear view of multi-ethnic group of high school teenagers in a school classroom sitting at desks, all raising their hands to answer a question, their male teacher standing in the background — Stock Photo
    Rear view of multi-ethnic group of high school teenagers in a school classroom sitting at desks, all raising their hands to answer a question, their male teacher standing in the background
    High school students with hands raised during lesson in classroom — Stock Photo
    High school students with hands raised during lesson in classroom
    Front view of multi-ethnic group of teenagers in a high school classroom sitting at desks, all raising their hands to answer a question — Stock Photo
    Front view of multi-ethnic group of teenagers in a high school classroom sitting at desks, all raising their hands to answer a question
    Teacher calling on student with hand raised in adult education classroom — Stock Photo
    Teacher calling on student with hand raised in adult education classroom
    Audience clapping for female speaker — Stock Photo
    Audience clapping for female speaker
    High school students with arms raised, asking questions in classroom — Stock Photo
    High school students with arms raised, asking questions in classroom
    Chinese schoolgirl asking teacher a question — Stock Photo
    Chinese schoolgirl asking teacher a question
    Man speaking to guilty girlfriend in speech bubble — Stock Photo
    Man speaking to guilty girlfriend in speech bubble
    Worried senior woman sitting in bedroom holding medicine and talking on mobile phone — Stock Photo
    Worried senior woman sitting in bedroom holding medicine and talking on mobile phone
    Front view of a teenage mixed-race boy in a school classroom sitting at desk, raising his hand to answer a question, with teenage male and female classmates sitting at desks working in the background — Stock Photo
    Front view of a teenage mixed-race boy in a school classroom sitting at desk, raising his hand to answer a question, with teenage male and female classmates sitting at desks working in the background
    People walking on street by anonymous person begging. — Stock Photo
    People walking on street by anonymous person begging.
    Businesswoman leading conference presentation, answering audience questions — Stock Photo
    Businesswoman leading conference presentation, answering audience questions
    Smiling female science teacher leading lesson at whiteboard in classroom — Stock Photo
    Smiling female science teacher leading lesson at whiteboard in classroom
    Male teacher leading physics lesson at whiteboard in classroom — Stock Photo
    Male teacher leading physics lesson at whiteboard in classroom
    Eacher teaching mathematics to children — Stock Photo
    Eacher teaching mathematics to children
    Executive asking while discussing on whiteboard in office. — Stock Photo
    Executive asking while discussing on whiteboard in office.
    High school girl students with hands raised during lesson in classroom — Stock Photo
    High school girl students with hands raised during lesson in classroom
    Female business executive giving a speech at conference center — Stock Photo
    Female business executive giving a speech at conference center
    Businessman speaker with microphone and digital tablet talking at conference — Stock Photo
    Businessman speaker with microphone and digital tablet talking at conference
    Side view close up of multi-ethnic group of smiling high school teenagers in a school classroom sitting at desks, all raising their hands to answer a question — Stock Photo
    Side view close up of multi-ethnic group of smiling high school teenagers in a school classroom sitting at desks, all raising their hands to answer a question
    Chinese waiter taking order from woman at restaurant — Stock Photo
    Chinese waiter taking order from woman at restaurant
    Worried senior man sitting in bedroom holding medicine and talking on mobile phone — Stock Photo
    Worried senior man sitting in bedroom holding medicine and talking on mobile phone
    Woman with microphone asking question in audience at conference — Stock Photo
    Woman with microphone asking question in audience at conference
    Mother helping daughter with homework in kitchen at home — Stock Photo
    Mother helping daughter with homework in kitchen at home
    Eacher teaching mathematics to children — Stock Photo
    Eacher teaching mathematics to children
    Students raising hands in classroom — Stock Photo
    Students raising hands in classroom
    Crop of african-american man raising his hand against yellow background — Stock Photo
    Crop of african-american man raising his hand against yellow background
    High school students with hands raised in classroom — Stock Photo
    High school students with hands raised in classroom