Ключевые слова: 4, america, american, background, builder, card, celebrate, celebration, color, congratulate, construction, country, day, equipment, event, flag, flat, greeting, hammer, happy, holiday, instruments, job, labor, labour, lay, letters, nails, national, nobody, object, patriotism, red, september, states, text, tools, top, united, usa, view, words, work, worker,