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Portrait of a doctor at work.Portrait of a doctor at work.
teenage boy plays the guitarteenage boy plays the guitar
Senior man teaching his grandson how to fish.Senior man teaching his grandson how to fish.
Mature man wearing a hat and strumming an acoustic guitar outdoors.Mature man wearing a hat and strumming an acoustic guitar outdoors.
A small boy checks the heart beat of a doctor via stethoscope.A small boy checks the heart beat of a doctor via stethoscope.
little boy climbs on horselittle boy climbs on horse
boy wearing army capboy wearing army cap
High school student using drill in woodworking classHigh school student using drill in woodworking class
Focused high school student conducting chemistry scientific experimentFocused high school student conducting chemistry scientific experiment
Female high school student in woodworking classFemale high school student in woodworking class
High school student testing electronics of drone in shop classHigh school student testing electronics of drone in shop class
High school student testing electronics of drone in shop classHigh school student testing electronics of drone in shop class
Close up focused high school student assembling robot in science classClose up focused high school student assembling robot in science class
High school student conducting scientific experiment in biology classHigh school student conducting scientific experiment in biology class
Close up machine operator watching computer monitor in cheese processing plantClose up machine operator watching computer monitor in cheese processing plant
Concentrated young man flies drone watching it through the glassesConcentrated young man flies drone watching it through the glasses
Mature adult man with a long beard.Mature adult man with a long beard.
Athletic female boxer in boxing ring leaning on rope concentrating before the fightAthletic female boxer in boxing ring leaning on rope concentrating before the fight
Athletic female boxer in boxing ring leaning on rope concentrating before the fightAthletic female boxer in boxing ring leaning on rope concentrating before the fight
Young boy in baseball helmet concentrating on his hitYoung boy in baseball helmet concentrating on his hit
Concentrated businesswoman using laptop attentivelyConcentrated businesswoman using laptop attentively
Young woman is playing baseballYoung woman is playing baseball
Young man is playing baseballYoung man is playing baseball
Veterinarian surgeons and nurses in uniform concentrating and operating dog using special equipment in operating room of contemporary hospitalVeterinarian surgeons and nurses in uniform concentrating and operating dog using special equipment in operating room of contemporary hospital
Surgeons and nurses in uniform concentrating and operating patient using special equipment in operating room of contemporary hospitalSurgeons and nurses in uniform concentrating and operating patient using special equipment in operating room of contemporary hospital
Concentrated young man with backpack holding handrail while standing in empty subway carConcentrated young man with backpack holding handrail while standing in empty subway car
Concentrated youthful male passenger photographing on cellphone through window while sitting in trainConcentrated youthful male passenger photographing on cellphone through window while sitting in train
Side view of a mixed race teenage male high school student in a classroom, working on a computer and concentrating, with other pupils working on computers in the backgroundSide view of a mixed race teenage male high school student in a classroom, working on a computer and concentrating, with other pupils working on computers in the background
Overhead view of a teenage Caucasian girl in a school classroom sitting at desk, concentrating and using a laptop computerOverhead view of a teenage Caucasian girl in a school classroom sitting at desk, concentrating and using a laptop computer
Side view of a male Caucasian teacher standing and talking with a teenage African American female high school student working on a computer and concentrating in a classroomSide view of a male Caucasian teacher standing and talking with a teenage African American female high school student working on a computer and concentrating in a classroom
Overhead view of a teenage Caucasian girl in a high school classroom sitting at desk, concentrating and writing in her notebookOverhead view of a teenage Caucasian girl in a high school classroom sitting at desk, concentrating and writing in her notebook
Side view of a teenage African American girl in a high school classroom sitting on a desk, concentrating and writing, with teenage male and female classmates sitting at desks working in the backgroundSide view of a teenage African American girl in a high school classroom sitting on a desk, concentrating and writing, with teenage male and female classmates sitting at desks working in the background
Side view of a teenage African American male high school student reading to a multi-ethnic class of teenagers sitting at desks in a school classroom listening and concentratingSide view of a teenage African American male high school student reading to a multi-ethnic class of teenagers sitting at desks in a school classroom listening and concentrating
Front view of a teenage mixed-race boy in a school classroom sitting at desk, concentrating and using laptop computer, with teenage male and female classmates sitting at desks working in the backgroundFront view of a teenage mixed-race boy in a school classroom sitting at desk, concentrating and using laptop computer, with teenage male and female classmates sitting at desks working in the background
Front view of a teenage mixed-race boy in a school classroom sitting at desk, concentrating and reading, with teenage male and female classmates sitting at desks working around himFront view of a teenage mixed-race boy in a school classroom sitting at desk, concentrating and reading, with teenage male and female classmates sitting at desks working around him
Front view close up of a teenage Caucasian girl in a school classroom sitting at desk, concentrating and writing, with teenage male and female classmates sitting at desks working in the backgroundFront view close up of a teenage Caucasian girl in a school classroom sitting at desk, concentrating and writing, with teenage male and female classmates sitting at desks working in the background
Side view of a teenage Caucasian boy in a school classroom sitting at desk, concentrating and writing, with teenage male and female classmates sitting at desks working in the backgroundSide view of a teenage Caucasian boy in a school classroom sitting at desk, concentrating and writing, with teenage male and female classmates sitting at desks working in the background
Front view close up of a teenage mixed-race boy in a school classroom sitting at desk, concentrating and using tablet computer, with teenage male and female classmates sitting at desks working in the backgroundFront view close up of a teenage mixed-race boy in a school classroom sitting at desk, concentrating and using tablet computer, with teenage male and female classmates sitting at desks working in the background
Side view of a teenage Caucasian girl in a school classroom sitting at desk, concentrating and writing, with teenage male and female classmates sitting at desks working in the backgroundSide view of a teenage Caucasian girl in a school classroom sitting at desk, concentrating and writing, with teenage male and female classmates sitting at desks working in the background
Side view of a teenage Caucasian girl in a school classroom sitting at desk, concentrating, with teenage male and female classmates sitting at desks working in the backgroundSide view of a teenage Caucasian girl in a school classroom sitting at desk, concentrating, with teenage male and female classmates sitting at desks working in the background
Side view of a teenage Caucasian boy in a school classroom sitting at desk, concentrating and smiling, with teenage male and female classmates sitting at desks working in the backgroundSide view of a teenage Caucasian boy in a school classroom sitting at desk, concentrating and smiling, with teenage male and female classmates sitting at desks working in the background
Side view of a teenage Caucasian boy in a school classroom sitting at desk, concentrating and writing, with teenage mixed race male and African American female classmates sitting at desks working in the on either side of himSide view of a teenage Caucasian boy in a school classroom sitting at desk, concentrating and writing, with teenage mixed race male and African American female classmates sitting at desks working in the on either side of him
Side view close up of a teenage mimed-race boy in a school classroom sitting at desk, concentrating, with teenage male and female classmates sitting at desks working in the backgroundSide view close up of a teenage mimed-race boy in a school classroom sitting at desk, concentrating, with teenage male and female classmates sitting at desks working in the background
Side view of a teenage Caucasian girl in a school classroom sitting at desk, concentrating, with teenage male and female classmates sitting at desks working in the backgroundSide view of a teenage Caucasian girl in a school classroom sitting at desk, concentrating, with teenage male and female classmates sitting at desks working in the background
Front view close up of a teenage Caucasian girl in a school classroom sitting at desk, concentrating and reading, with teenage male and female classmates sitting at desks working in the backgroundFront view close up of a teenage Caucasian girl in a school classroom sitting at desk, concentrating and reading, with teenage male and female classmates sitting at desks working in the background
Side view of a teenage Caucasian boy in a school classroom sitting at desk, concentrating, looking out of the window and leaning his head on his handSide view of a teenage Caucasian boy in a school classroom sitting at desk, concentrating, looking out of the window and leaning his head on his hand
Side view close up of a teenage Caucasian boy in a school classroom sitting at desk, concentrating, looking out of the window, leaning his head on his handSide view close up of a teenage Caucasian boy in a school classroom sitting at desk, concentrating, looking out of the window, leaning his head on his hand
Front view of a teenage African American girl in a school classroom sitting at desk, concentrating and reading, with teenage male classmates sitting at desks working in the backgroundFront view of a teenage African American girl in a school classroom sitting at desk, concentrating and reading, with teenage male classmates sitting at desks working in the background

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