Ключевые слова: abc, background, block, board, childhood, college, color, colorful, concept, cube, dot, drill, education, elementary, hand, homework, knowledge, lamb, language, learn, letter, light, message, note, notebook, office, pen, pencil, practice, roar, romp, school, sheet, sign, spot, stack, student, study, studying, table, teach, text, university, wood, wooden, word, write,