Bài tập cloze test - Đề 10 có đáp án

  WRITE ONE WORD IN EACH GAP TO COMPLETE THE PARAGRAPH

Most of us associate air pollution with cars, factories and power stations. (1) , there is at least one case of air pollution that goes back hundreds of years. In 1306, King Edward the First of England banned the burning of a type of fuel called sea coal. It got this name (2) was found and collected on beaches. Sea coal was a great advantage for ordinary people because (3) did not need to rely on the primitive mining industry. (4) , it was free. At that time, most people used to burn wood to heat their homes (5) a sudden shortage of wood meant that people had to find an alternative source of fuel, and sea coal began to be widely used for heating homes. The problem with sea coal is that (6) produces much more smoke than wood does. Soon, towns and cities became dirty, smelly and unhealthy and the smog in London was said to be unbearable. (7) the King's efforts, the problem was never really solved.