1. When I last saw him, he _____ in London.
A. has lived B. is living C. was living D. has been living
2. We _______ Dorothy since last Saturday.
A. don't see B. haven't seen C. didn't see D. hadn't seen
3. The train ______ half an hour ago.
A. has been leaving B. left C. has left D. had left
4. Jack ______ the door.
A. has just painted B. paint C. will have painted D. painting
5. My sister ________ for you since yesterday.
A. is looking B. was looking C. has been looking D. looked
6. I ______ Texas State University now.
A. am attending B. attend
C. was attending D. attended
7. He has been selling motorbikes ________.
A. ten years ago B. since ten years
C. for ten years ago D. for ten years
8. Christopher Columbus _______ American more than 500 years ago.
A. discovered B. has discovered
C. had discovered D. had been discovering
9. He fell down when he ______ towards the church.
A. run B. runs C. was running D. had run
10. We _______ there when our father died.
A. still lived B. lived still C. was still lived D. was still living
Mình nghĩ là tùy vào từng năng lực và kiến thức về tiếng anh mà mình có thôi bạn , chứ không dựa vào cấp bậc lớp học đâu. Chứ nếu mà xét theo cấp bậc thì khó lắm. Theo mình thì bạn nên dùng một số từ dài và đa dạng hơn, những câu văn dài và hay hơn, thêm một số ý nưã ạ