Chọn câu trả lời đúng cho mỗi câu hỏi dưới đây.
1. When I last saw him, he _____ in London.
2. We _______ Dorothy since last Saturday.
3. The train ______ half an hour ago.
4. Jack ______ the door.
5. My sister ________ for you since yesterday.
6. I ______ Texas State University now.
7. He has been selling motorbikes ________.
8. Christopher Columbus _______ American more than 500 years ago.
9. He fell down when he ______ towards the church.
10. We _______ there when our father died.
11. They ______ table tennis when their father comes back home.
12. By Christmas, I _______ for Mr. Smith for six years.
13. I _______ in the room right now.
14. I ______ to New York three times this year.
15. I'll come and see you before I _______ for the States.
x
16. The little girl asked what _______ to her friend.
17. John ______ a book when I saw him.
18. He said he _______ return later.
19. Jack ________ the door.
20. I have been waiting for you ______.
