Ключевые слова: awareness, back, bag, bin, black, boy, boys, carry, carrying, children, classroom, clean, dirt, dirty, disposal, dump, dustman, duty, ecology, education, environment, environmental, full, garbage, hand, help, hold, holding, household, litter, male, man, object, package, people, person, pick, plastic, pollution, recycle, recycling, refuse, role, rubbish, school, section, shift, students, trash, waste,