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    African american student raising hand in class — Stock Photo
    African american student raising hand in class
    Girls and boys in a classroom — Stock Photo
    Girls and boys in a classroom
    Young girl asking for help from her father while he reads the newspaper at home. — Stock Photo
    Young girl asking for help from her father while he reads the newspaper at home.
    Teacher calling on student with hand raised in adult education classroom — Stock Photo
    Teacher calling on student with hand raised in adult education classroom
    Business executives participating in a business meeting at conference center — Stock Photo
    Business executives participating in a business meeting at conference center
    Junior high students raising hands — Stock Photo
    Junior high students raising hands
    Khao Yai National Park, Thailand, Asia; Monkey Begging standing on road — Stock Photo
    Khao Yai National Park, Thailand, Asia; Monkey Begging standing on road
    Teacher calling on students with hands raised in adult education classroom — Stock Photo
    Teacher calling on students with hands raised in adult education classroom
    High school boy student with hand raised during lesson in classroom — Stock Photo
    High school boy student with hand raised during lesson in classroom
    High school students with hands raised in debate class — Stock Photo
    High school students with hands raised in debate class
    Female business executive giving a speech at conference center — Stock Photo
    Female business executive giving a speech at conference center
    Rear view of boy raising hand — Stock Photo
    Rear view of boy raising hand
    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
    Businesswoman leading conference presentation, answering audience questions — Stock Photo
    Businesswoman leading conference presentation, answering audience questions
    African american student raising hand in class — Stock Photo
    African american student raising hand in class
    High school teacher calling on students with hands raised in classroom — Stock Photo
    High school teacher calling on students with hands raised in classroom
    Female business executive giving a speech at conference center — Stock Photo
    Female business executive giving a speech at conference center
    Student raising hand — Stock Photo
    Student raising hand
    Eager girl students raising arms behind microscopes in laboratory classroom — Stock Photo
    Eager girl students raising arms behind microscopes in laboratory classroom
    Chinese waiter taking order from woman at restaurant — Stock Photo
    Chinese waiter taking order from woman at restaurant
    Female speaker on stage answering audience questions — Stock Photo
    Female speaker on stage answering audience questions
    High school students with arms raised, asking questions in classroom — Stock Photo
    High school students with arms raised, asking questions in classroom
    Mother helping children with homework in kitchen at home — Stock Photo
    Mother helping children with homework in kitchen at home
    High school students with hands raised in debate class — Stock Photo
    High school students with hands raised in debate class
    Men drawing on paper — Stock Photo
    Men drawing on paper
    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.
    Question mark under judge gavel — Stock Photo
    Question mark under judge gavel
    High school teacher calling on students during lesson in classroom — Stock Photo
    High school teacher calling on students during lesson in classroom
    Caucasian couple enjoying their time at a beach during sunset, a man is kneeling and proposing to a woman — Stock Photo
    Caucasian couple enjoying their time at a beach during sunset, a man is kneeling and proposing to a woman
    Rural teacher and pupils in outdoor learning — Stock Photo
    Rural teacher and pupils in outdoor learning
    Chinese waiter taking order from woman at restaurant — Stock Photo
    Chinese waiter taking order from woman at restaurant
    Cute boy raising finger — Stock Photo
    Cute boy raising finger
    Mother helping children with homework in kitchen at home — Stock Photo
    Mother helping children with homework in kitchen at home
    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
    College students raising hands in science laboratory classroom — Stock Photo
    College students raising hands in science laboratory classroom
    A group of Caucasian boys and girls at a boot camp on a sunny day, sitting on the grass, smiling and raising their hands, volunteering to an unseen fitness coach — Stock Photo
    A group of Caucasian boys and girls at a boot camp on a sunny day, sitting on the grass, smiling and raising their hands, volunteering to an unseen fitness coach
    Chinese schoolgirl asking teacher a question — Stock Photo
    Chinese schoolgirl asking teacher a question
    A group of Caucasian boys and girls listening to instructions from a Caucasian male fitness coach at a boot camp on a sunny day, sitting on the grass and raising their hands — Stock Photo
    A group of Caucasian boys and girls listening to instructions from a Caucasian male fitness coach at a boot camp on a sunny day, sitting on the grass and raising their hands
    Smiling, eager girl student asking a question in classroom — Stock Photo
    Smiling, eager girl student asking a question in classroom
    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
    Teacher explaining to junior high students — Stock Photo
    Teacher explaining to junior high students
    Male teacher leading physics lesson at whiteboard in classroom — Stock Photo
    Male teacher leading physics lesson at whiteboard in classroom
    Man with laptop and apple core with asking spaniel dog on balcony — Stock Photo
    Man with laptop and apple core with asking spaniel dog on balcony
    Side view of multi-ethnic group of high school teenagers in a school classroom sitting at desks, all raising their hands to answer a question — Stock Photo
    Side view of multi-ethnic group of high school teenagers in a school classroom sitting at desks, all raising their hands to answer a question
    Children raising hands — Stock Photo
    Children raising hands
    High school students with hands raised in classroom — Stock Photo
    High school students with hands raised in classroom
    Man with laptop and apple core with asking spaniel dog on balcony — Stock Photo
    Man with laptop and apple core with asking spaniel dog on balcony
    Man talking at press conference — Stock Photo
    Man talking at press conference
    Golden retriever dog on beach looking up at owner — Stock Photo
    Golden retriever dog on beach looking up at owner
    Caucasian couple enjoying their time at a beach during sunset, a man is kneeling and proposing to a woman — Stock Photo
    Caucasian couple enjoying their time at a beach during sunset, a man is kneeling and proposing to a woman
    High school students with hands raised during lesson in classroom — Stock Photo
    High school students with hands raised during lesson in classroom
    Young Girl and boy asking for help putting on their masks — Stock Photo
    Young Girl and boy asking for help putting on their masks
    Man gesturing with wine at party — Stock Photo
    Man gesturing with wine at party
    Eacher teaching mathematics to children — Stock Photo
    Eacher teaching mathematics to children
    Audience clapping for female speaker — Stock Photo
    Audience clapping for female speaker
    Crop forearm of african-american man raising hand against pink background — Stock Photo
    Crop forearm of african-american man raising hand against pink background
    Woman giving an interview to journalists — Stock Photo
    Woman giving an interview to journalists
    Pretty ethnic woman in white t-shirt and jeans leaning on green door and looking at camera with finger on lips like silence sign — Stock Photo
    Pretty ethnic woman in white t-shirt and jeans leaning on green door and looking at camera with finger on lips like silence sign
    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
    Schoolboy raising hand in classroom — Stock Photo
    Schoolboy raising hand in classroom