fumes - Any smokelike or vaporous exhalation from matter or substances, esp. of an odorous or harmful nature, concrete - An artificial, stonelike building material made by mixing cement and sand with water and allowing the mixture to harden., pedestrian - One who travels on foot, rooftop - The top part of a building, esp. the outer surface, pollution - The introduction of harmful substances or products into the environment, self-suficient - Able to supply one's or its own needs without help, dependent - Relying on someone or something else for aid or support, energy - Any source of usable power, as fossil fuel, nuclear fission, electricity, or solar radiation,

Crossword - Vocabulary U2 - Gold Experience B1+

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