11. If this factory continues____________ into the lake, all the fish and other aquatic animals will die. A. dumping B. polluting C. contaminating D. throwing 12. Soil pollution happens when people destroy the __________ A. air pollution B. Earth’s surface C. sea D. temperature 13. The vegetable price is increasing because the rain has _____ damage to almost all vegetables in this area. A. affected B. resulted C. caused D. led 13. On Christmas Eve, most big cities, especially London are __________ with coloured lights across the streets and enormous Christmas trees. A. decorated B. hang C. put D. made 14. In the United States, there are 50 __________ and six different time zones across the country. A. states B. nations C. towns D. countries 15. Nowadays you still see the __________ men wear kilts (skirts) to wedding or other formal occasions. A. Scottish B. Scotland C. Scots D. Scot