----- Nội dung dịch tự động từ ảnh ----- I. Choose the best answer among A, B, C, or D. 1. When I last saw him, he A. has lived _in London. C. was living D. has been living B. is living _Dorothy sincelast Saturday. 2. We A. don't see B. haven't seen C. didn't see D. hadn't seen 3. The train 4. Jack half an hour ago. the door. for you since yesterday. B. left C. has left C. will have painted D. painting A. has been leaving B. paint D. had left A. has just painted 5. My sister A. is looking B. was looking C. has been looking D. looked 6. I A. am attendingB. attend 7. He has been selling motorbikes A. ten years ago 8. Christopher Columbus A. discovered B. has discovered 9. He fell down when he Texas State University now. C. was attendingD. attended C. for ten years ago American more than 500 years ago. C. had discovered B. since ten years D. for ten years D. had been discovering towards the church. C. was running D. had run A. run B. runs 10. We A. still lived there when our father died. B. lived still C. was still lived D. were still living