1. This area has become polluted that no one can live here. A. such B. so C. too D. enough 2. Air pollution is the most prominent and dangerous of pollution. A. way B. means C. problem D. form 3. If I you, I volunteer to clean the beach. A. am/ will B. was/ will C. am/ would D. were/ would 4. If our school the tree planting project, I join in. A. organize/ will B. organizes/ would C. organized/ would D. organized/ will 5. the air pollution, there is noise pollution in the city. A. With B. Next C. Beside D. Besides 6. Without water, there no lives on the Earth so we have to reduce water pollution. A. was B. were C. will be D. would be 7. Do you believe the existence of UFOs? A. in B. on C. at D. to 8. There’s no that there’s life on other planets. A. way B. proof C. requirement D. space 9. Jupiter is thought a gaseous and fluid planet without solid surface. A. to be B. to have been C. be D. being 10. Europa is the fourth moon of Jupiter. A. large B. larger C. largest D. largely 11. Earth has atmosphere that is too hot too cold. A. neither/ nor B. either/ or C. not only/ but also D. both/ and 12. She told him that if he his promise, she to him again. A. break/ would never speak B. breaks/ will never C. broke/ will never speak D. broke/ would never speak 13. They claimed they the law. A. have not broken B. were not breaking C. had not broken D. would not breaking 14. he got a scholarship from Oxford University made his parents so happy and proud. A. Which B. Because C. Although D. The fact that 15. Although the computer _ five years ago, it is still in a good condition. A. is bought B. bought C. was bought D. has been bought