Ключевые слова: abc, academic, alphabet, background, blackboard, board, chalk, chalkboard, class, close, concept, educated, education, educational, educator, elementary, erase, examination, exercises, expertise, grammar, handwriting, inquire, intellectual, intelligence, knowledge, learn, lesson, letter, mark, nursery, presentation, primary, school, schoolwork, smart, start, student, study, studying, teach, teacher, wonder, work, write,