Passage 1 In common with many countries, Britain has serious environmental problems. In 1952, more than 4,000 people died in London because of the smog. The government (1)_____ new laws to stop smog from coal fires and factories and the (2)_____
Passage 1 In common with many countries, Britain has serious environmental problems. In 1952, more than 4,000 people died in London because of the smog. The government (1)\_\_\_\__ new laws to stop s