. A. solar B. biogas C. hydro D. environment 2. A. coughed B. realised C. picked D. introduced 3. A. pollution B. vacation C. nation D. suggestion 4. A. pavement B. mistake C. station D. traffic Mark the letter A, B, C or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions. 5. A. install B. convert C. produce D. answer 6. A. dangerous B. plentiful C. effective D. cultural 7. A. attend B. perform C. gather D. convert 8. A. pollution B. performance C. consumption D. energy Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions. 9. At this time next week, they will fix this road. A B C D 10. I think his latest film so gripping. A B C D 11. More eco-friendly products will be inventing in the future. A B C D 12. There used to be less traffic jams in big cities. A B C D