----- Nội dung ảnh ----- 3. It's three years since I last took on an eco-tour. (not) 4. The last time I went to Aonemall was two weeks ago. (haven't) 5. My family started living in Hue when I was 12. (since) 6. It's over a long time since he last attended a course on soft skills. (hasn't) 7. Mai last saw her brother when she left for Australia. (not) 8. When did you learn English? How long ________________________