Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks. Solar energy does not create any (1) ________ and is widely used by many countries. It is (2) ________ source of power because the sun will continue to produce sunlight all the years. Solar panels which are required to harness this energy can be used (3)________ a long time and require little or no maintenance. (4) ________ , solar energy proves to be ineffective in colder regions which don’t receive good sunlight. (5) ________ cannot be used during night and not all the light from the sun can be trapped by solar panels. Solar energy advantages are much more than its disadvantages (6) ________ make it as a viable source of producing alternative energy. 1. A. pollute​ B. pollution​ C. pollutedly​ D. polluted 2. A. renewable​ B. dangerous​ C. expensive​ D. ineffective 3. A. of​ B. for​ ​C. at​​ D. with 4. A. Therefore​ B. However​ C. So​​ D. Although 5. A. It​​ B. Its​ C. She​ D. He 6. A. who​ B. when​ C. which​ D. whom