Sad, unhappy. Alone thoughtful young woman, girl expression face thinking about problem
Sad, unhappy. Alone thoughtful young woman, girl expression face thinking about problem
Elementary student boy doing homework on floor at home. Child learning, doing exercises in workbook
Elementary student boy doing homework on floor at home. Child learning, doing exercises in workbook
Elementary student boy doing homework at home. Child learning to count, solves arithmetic examples
Small wooden dice with question mark on keyboard
businessman in eyeglasses with laptop at office
Thinking, face and eyes of black woman with question, solution or remember ideas in white backgroun
Laptop, black woman and typing at table in work from home office, internet research and seo technol
