----- Nội dung dịch tự động từ ảnh ----- a Viettel 6.1 A. am attending B. attend C. was attending D. attended Texas State University now. A. ten years ago B. since ten years C. for ten years ago 7. He has been selling motorbikes D. for ten years 8. Christopher Columbus A. discovered B. has discovered C. had discovered D. had been discovering 9. He fell down when he A. run B. runs C. was running D. had run 10. We 11. They 20:11 cdn.fbsbx.com A. still lived B. lived still C. was still lived D. was still living A will play towards the church. there when our father died. American more than 500 years ago. table tennis when their father comes back home. 24% Q Xong