16. Mary ___________ in London for 15 years. A. lives B. was living C. is living 17. I'm hungry now. I _________ anything today. A. didn't eat B. haven't eaten C. don't eat 18. When we arrived home last night, everybody ___________ . A. has already slept B. had already slept C. was already sleeping D. already sleeping 19. Mark Twain _________ loved his wife before he met her. A. is B. was C. has 20. How __________ since we left school? A. will you B. have you been C. are you 21. They _________ a presentation at this time tomorrow morning. A. are making B. are going to make C. will be making 22. Mary ____________ an hour ago. A. don't see B. hadn't seen C. didn't see 23. What will Nam do when he __________ school next year? A. could finish B. will finish C. has finished 24. I ____________in Hanoi before I moved to HCM City. D. has lived D. won't eat D. had D. are you being D. will making D. haven't seen D. finishes A. had been living C. have lived 25. When I was a boy, I _____________tea to coffee. A. preferred B. was preferring B. had lived D. have been living C. have preferred 26. He went back to work in his country after he ________his course on Advanced Engineering in London. A. was finishing B. finishes C. has finished D. had finished 27. He __________up his mind yet. A. hasn't made B. didn't make C. wasn't making D. wasn't make