VIII. Put the words in the correct order to make correct sentences.
46. What/ at/ home?/ you/ use/ type/ do/ of/ energy/
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47. Vietnam/ sources./ than/ got/ more/ other/ energy/ energy/ from/ coal/ from/
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48. Nuclear/ and efficient/ power/ producing/ is/ a/ clean/ way/ of/ electricity,/ be/ dangerous./ but/ it/ may/
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49. A coal/pollution./power/ plant/it/ causes/ is/ cheap/ to build,/ but/
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50. Scientists/a new/ to replace/ are/ for/ energy/ coal/ source/ now./ looking/