Ключевые слова: 4, america, american, background, card, celebration, color, composition, construction, country, day, different, engineer, equipment, event, flat, greeting, happy, hardhat, headgear, helmet, holiday, industry, instruments, job, labor, labour, lay, letters, level, measuring, mechanic, national, nobody, object, patriotism, profession, protective, red, september, states, text, tool, tools, top, united, usa, view, wooden, words,