I. Đọc bài và chọn đáp án đúng
1. not clear year
2. C
3. B
4. C
II. Viết lại câu
1. He asked me how long I had been standing there.
2. How long is it since you started working on the project? Or How long have you start working on the project?
3. Although I tried to stop smoking, it was very difficult to do.
4. The shelf was too high for the children to reach.
5. Hue, which is the former capital of Vietnam, is acknowledged as the World’s Cultural Heritage.
