Ключевые слова: achieve, aim, ambition, ascend, book, boy, challenge, choice, choose, climb, complex, complexity, concept, confused, confusion, culture, decide, decision, difficult, difficulty, direction, education, endless, goal, graduation, high, information, intelligence, know, learn, learning, man, motivation, occupation, opportunity, option, rise, scale, school, stair, staircase, stairs, stairway, step, student, study, studying, way, work,