2. Choose the correct option. 1) Ugh, this cheese is old. 2) After they built the new road, there was less petrol / traffic in the city centre. 3) The company closed the factory / bin after complaints about pollution from local residents. 4) It's becoming more and more difficult to find new sources of smoke / oil in the world. 5) Does your car run on oil / petrol or gas? 6) The forest fire was in an area with lots of endangered / rubbish animals.