Ключевые слова: background, backhoe, blue, building, bulldozer, business, car, carry, colorful, concept, construction, cooperation, creativity, excavation, excavator, game, grader, heap, help, idea, industry, inspiration, isolated, jigsaw, leadership, leisure, loader, loading, logistic, multicolored, pieces, pile, play, problems, puzzle, scoop, shovel, solution, success, team, teamwork, technology, thinking, toy, tractor, transportation, truck, white, work, yellow,