1. The famous Sydney Opera House as an arts center since 1973. A. serves B. served C. have served D. has served 2. If you the president, what would you do to help the environment? A. would be B. are C. had been D. were 3. Don’t drink that water. It’s . A. contaminated B. pure C. damaged D. dumped 4. Linh: Mai has won the first prize. - Ha: ! A. That's awesome B. Oh dear C. How terrible D. That's shocking 5. This animal, the , is a symbol of Australia. A. kangaroo B. koala C. rabbit D. tiger 6. Do you know that the telephone, the TV and penicillin are Scottish . A. inventors B. inventor C. inventions D. invention 7. Noise pollution can lead to loss. A. looking B. hearing C. listening D. reading 8. Have you come solutions to this problem? A. up to B. to with C. up with D. on to 9. Air , together with littering, is causing many problems in our cities today. A. pollute B. pollution C. polluting D. polluted 10. The road in front of my office is always when it rains heavily. A. to flood B. flooding C. flood D. flooded