he Earth Day comes from the idea of a former US politician Gaylord Nelson. He was worried about the world pollution, and the health of plants and animals. In 1969, he decided that the world should have a special day to teach people about how to make environment better. His idea became popular and on 22 April 1970 the first Earth Day was celebrated. Since then, environmentalists have used the day to educate people about their roles in protecting our planet. Earth Day finally became a global celebration around the world. On this day, people come together to talk about global warming, protecting rare animals and saving energy sources. Question 20: Environmentalists have used the Earth Day to ________. A: ban people from using energy sources B: carry their research C: educate people about their roles of protecting our planet D: get people around the world to play together 3 Choose the best answer A, B, C or D to complete the sentence. Question 10: Too much use of electric lights in cities may cause ___________ pollution. A: light B: water C: visual D: thermal 4 Choose the best answer A, B, C or D to complete the sentence. Question 12: The polluted water__________ in the death of the fish. A: results B: leads C: causes D: makes 5 Choose the best answer A, B, C or D to complete the sentence. Question 7: I think the waste from the factory has ___________ the lake. A: polluted B: damage C: damaged D: pollution 6 Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions.