... feeding C. has fed D. feeding 10. The undeveloped country needs to develop ___________in order to attract foreign investment. A. conclusion B. microorganism C. infrastructure D. tradition 11. ... True or False in your answer sheet: Energy is very important in modern life. People use energy to run machines, heat and cool their homes, cook, give light, transport people and products from place ... without D. for 16. A. idea B. love C. importance D. warmth 17. A. easy B. easily C. hard D. difficult 18. A. in B. on C. at D. for 19. A. it B. that C. something D. anything 20. A. called B....