Ключевые слова: advance, amusing, animal, arithmetic, art, blackboard, board, boy, brainy, brick, capable, cat, chalkboard, child, childhood, class, clever, concept, design, drawing, education, erudite, example, exercise, fancy, fun, funny, hit, hunter, idea, intelligent, joke, kid, kitty, knowledge, learner, learning, lesson, little, mathematics, mice, mouse, person, purpose, school, student, success, task, teaching, tracker, unusual, wall,