8.When we arrived at the restaurant, the others __________ . A. left B. have left C. had left D. are leaving9. By the end of 2010 we_______ in Ho Chi Minh City for 30 years. A. work B. will work C. have worked D. will have worked 10. I learned that the college ________ in 1900 A. found B. was founded C. founded D. had been founded 11. If I ________ 10 years younger, I _________ the job. A. am/ will take B. were/ would take C. would be/ took D. had been / would take 12. By the time he _____________ to the meeting, it had begun for 15 minutes. A. had gone B. has gone C. went D. was going 13. He began to feel ill while ___________________. A. he is doing the exam B. he did the exam C. he would do the exam D. he was doing the exam. 14. Since 1980, scientists the world over _____ a lot of things to fight against AIDS. A. have done B. are doing C. did D. had done 15. Now my sister _____ a bicycle of her own. A. is having B. are having C. has D. had