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oration steps forward C. the space exploration stepping forward D. the space exploration stepped forward 12. _________ in a hurry, the report is full of mistakes. A. Writing B. Written C. To write D. Being written 13. The last decade _______ remarkable progress made in medical research. A. see B. has seen C. saw D. had seen 14. I didn’t win the election. I was disappointed, but my positive didn’t allow me to _______ for a long time. A. put down B. take down C. turn down D. feel down 15. Though our city has ________ good public transport system, _______ private car is being ________ popular means of transport. A. /, a, / B. the, the, the C. a, the , a D. a, /, the 16. I _______ my son to Laos for sightseeing. I would rather you didn’t do that, for the bird flu________ several lives there. A. took, claimed B. am taking, has claimed C. take , had claimed D. will take, claimed 17. The residents approved of the measured _______ so far in our city,______ to bring a sharp rise in oil prices. A. having been taken, intended B. to be taken, intended C. taken, to intend D. taken, intended 18. Using renewable energy sources is a simple idea, but _____we find it hard to put into practice. A. what B. that C. which D. one 19. Bungee jumping is an adventurous sport, popular with young adults, _______ courage matters more than strength. A. whose B. that C. of which D. where 20. Where does Jack work? I’m not sure, but he worked at worked at Motorola when I last met him, _________. A. however B. though C. yet D. anyhow they tell you the final decision? No, they didn’t. But I think I ought to ________. A. / B. be C. have D. have been