III. Find a mistake in the four underlined parts of each sentence 1. Many people living in rural areas use biogas to cook, and heating. A B C D 2. Wind power is clean, abundant, widely available, and environmental friendly. A B C D 3. One of the ways you can save energy in your home are to use energy saving light bulbs. A B C D 4. Although his old age, Mark performed excellently in his latest film. A B C D 5. Almost people were shock by the way the film star behaved. A B C D 6. We prefer living in the countryside because it has fewer pollution than the city A B C D 7. Their children have never been given new clothes before, haven't they? A B C D 8.Your uncle works in Ha Noi for one year and then moved to Da Nang, didn't he? A B C D 9.There used to be less unemployed people in this city five years ago. A B C D 10.At 9 p.m next Sunday, We will be have a party with our family A B C D 11. Thanksgiving will celebrated among family's members next month A B C D 12. Scientists must have to discover an alternative source of energy before oil runs out. A B C D 13. The most common traffic problem in city around the world is traffic jam A B C D 14. In, the world's population will grown to 9 billion. A B C D 15. The festival is the more well-known in this region A B C D