Ключевые слова: alone, answer, ask, background, blackboard, blue, board, chalk, chalkboard, child, childhood, class, color, concept, confused, confusion, curiosity, cute, doubt, drawing, education, exam, eyeglasses, glasses, idea, intelligent, kid, knowledge, learning, lesson, looking, one, preschool, problem, question, question mark, school, sign, smart, student, study, teddy, teddy bear, test, think, thoughtful, wear, worry,