11. My neighbour is such a nuisance! ______ A. He always plays loud music late at night. B. He's always playing loud music late at night. C. He always plays loud music late at night. D. He has always played loud music late at night. 12. I met her while _________________ A. I did a training course in Beijing. B. I was doing a training course in Beijing. C. I have done a training course in Beijing. D. I have been doing a training course in Beijing. 13. When I was younger, we ______ A. were living in London. B. were lived in London. C. lived in London. D. have lived in London. 14. What exactly ______ at 8.15 yesterday evening? A. did you do B. were you do C. have you done D. were you doing 15. When I got home, I realized I ______ A. had left my keys at the office. B. left my keys at the office. C. have left my keys at the office. D. was leaving my keys at the office. 16. I ______ to Australia but I'd like to go there some day. A. never go B. had never been C. have never been D. was never going 17. Mr. Wong? He's not here, I'm afraid. I think he ______ A. goes to lunch B. has gone to lunch. C. have been going to lunch D. went to lunch