16. Air pollution, together with littering, has …….. many problems in our large cities today. A. caused B. made C. affected D. brought 17. It’s difficult to …….. what the planet Earth will be like in 100 years’ time. A. imagine B. expect C. remember D. see 18. Australia is a ………. place where kangaroos and koalas are found. A. popular B. scenic C. iconic D. unique 19. Lucas– “I have a terrible headache.” John- “I ………….. you an aspirin.” A. have got B. will get C. get D. would get 20. The family …….. in the attic of their house by the flood for 9 hours before help arrived. A. trapped B. was trapped C. had trapped D. had been trapped 21. Like the kangaroo and koala, the platypus is a …………… animal in Australia. A. scenic B. tailless C. attractive D. unique Circle the word of which the underlined sound is pronounced differently from the others. 22. a. ago b. flat c. man d. happy 23. a. wash b. late c. want d. quality 24. a. button b. cup c. pulp d. put 25. a. sunbathe b. product c. fun d. include