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    Male teacher calling on students in classroom — Stock Photo
    Male teacher calling on students in classroom
    Businesswoman in audience asking question at business conference — Stock Photo
    Businesswoman in audience asking question at business conference
    Girl and boys in a classroom — Stock Photo
    Girl and boys in a classroom
    Junior high students raising hands — Stock Photo
    Junior high students raising hands
    Executive asking while discussing on whiteboard in office. — Stock Photo
    Executive asking while discussing on whiteboard in office.
    Man asking his mother to taste his cooking — Stock Photo
    Man asking his mother to taste his cooking
    Female business executive giving a speech at conference center — Stock Photo
    Female business executive giving a speech at conference center
    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 speaker on stage answering audience questions — Stock Photo
    Female speaker on stage answering audience questions
    Rural teacher reading book to pupils in outdoor learning — Stock Photo
    Rural teacher reading book to pupils in outdoor learning
    Woman with microphone asking question in audience at conference — Stock Photo
    Woman with microphone asking question in audience at conference
    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
    Handing over house key with question mark — Stock Photo
    Handing over house key with question mark
    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
    Girls and boys in a classroom — Stock Photo
    Girls and boys in a classroom
    Teacher and students with hands raised in adult education class — Stock Photo
    Teacher and students with hands raised in adult education class
    Conference audience watching speakers on stage — Stock Photo
    Conference audience watching speakers on stage
    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
    Eacher teaching mathematics to children — Stock Photo
    Eacher teaching mathematics to children
    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.
    Schoolboy raising hand in classroom — Stock Photo
    Schoolboy raising hand in classroom
    Businesswoman asking question in conference audience — Stock Photo
    Businesswoman asking question in conference audience
    High school teacher calling on students with hands raised during lesson in classroom — Stock Photo
    High school teacher calling on students with hands raised during lesson in classroom
    Chinese schoolgirl asking teacher a question — Stock Photo
    Chinese schoolgirl asking teacher a question
    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
    African american students raising hands in class — Stock Photo
    African american students raising hands in class
    Student raising hand — Stock Photo
    Student raising hand
    Golden retriever dog on beach looking up at owner — Stock Photo
    Golden retriever dog on beach looking up at owner
    Male business executive giving a speech at conference center — Stock Photo
    Male business executive giving a speech at conference center
    Male teacher leading physics lesson at whiteboard in classroom — Stock Photo
    Male teacher leading physics lesson at whiteboard in classroom
    Mother helping children with homework in kitchen at home — Stock Photo
    Mother helping children with homework in kitchen at home
    Female business executive giving a speech at conference center — Stock Photo
    Female business executive giving a speech at conference center
    Chinese waiter taking order from woman at restaurant — Stock Photo
    Chinese waiter taking order from woman at restaurant
    Front view of a middle aged African female school teacher standing at the front of the class in front of the blackboard with the rear view of pupils sitting at their desks with hands raised in the foreground during a lesson — Stock Photo
    Front view of a middle aged African female school teacher standing at the front of the class in front of the blackboard with the rear view of pupils sitting at their desks with hands raised in the foreground during a lesson
    Eager girl students raising arms behind microscopes in laboratory classroom — Stock Photo
    Eager girl students raising arms behind microscopes in laboratory classroom
    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
    Khao Yai National Park, Thailand, Asia; Monkey Begging standing on road — Stock Photo
    Khao Yai National Park, Thailand, Asia; Monkey Begging standing on road
    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
    Man speaking to guilty girlfriend in speech bubble — Stock Photo
    Man speaking to guilty girlfriend in speech bubble
    Mother helping daughter with homework in kitchen at home — Stock Photo
    Mother helping daughter with homework in kitchen at home
    Eager, smiling students raising hands in science laboratory classroom — Stock Photo
    Eager, smiling students raising hands in science laboratory classroom
    High school students with hands raised during lesson in classroom — Stock Photo
    High school 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
    Children raising hands — Stock Photo
    Children raising hands
    Schoolgirl raising hand — Stock Photo
    Schoolgirl raising hand
    People walking on street by anonymous person begging. — Stock Photo
    People walking on street by anonymous person begging.
    Question mark under judge gavel — Stock Photo
    Question mark under judge gavel
    Cute boy raising finger — Stock Photo
    Cute boy raising finger
    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
    Chinese waitress taking order from man in coffee shop — Stock Photo
    Chinese waitress taking order from man in coffee shop
    Man talking at press conference — Stock Photo
    Man talking at press conference
    Girl raising hand in classroom — Stock Photo
    Girl raising hand in classroom
    High school students with hands raised during lesson in classroom — Stock Photo
    High school students with hands raised during lesson in 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 man ordering to female waitress in coffee shop — Stock Photo
    Chinese man ordering to female waitress in coffee shop
    Smiling female science teacher leading lesson at whiteboard in classroom — Stock Photo
    Smiling female science teacher leading lesson at whiteboard in classroom
    High school students with hands raised in classroom — Stock Photo
    High school students with hands raised in classroom
    Rural teacher and pupils in outdoor learning — Stock Photo
    Rural teacher and pupils in outdoor learning
    Smiling business people asking a question in conference audience — Stock Photo
    Smiling business people asking a question in conference audience