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. The 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 21: The best title for the passage can be ______. A: Preserving our energy sources B: The celebration of Earth Day C: Gaylord Nelson, the politician D: The meaning of the Earth Day 19 Mark the letter A, B, C or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges. Question 13. Nam: How about organizing a Clean Day for our school? Huong: _________. A: Good idea! How should we start? B: No. I had no idea about that. C: No problem. We can do. D: Oh yeah! I can’t believe that. 20 Choose the underlined part A, B, C or D that needs correcting. Picture 10 A: A B: B C: C D: D