WHILE I...ALONG THE ROAD, I SAW A FRIEND OF MINE. A. HAVE CYCLED B...

30. - DE THI THU TN CHO HS MIEN NUI
Tiếng Anh DE THI THU TN CHO HS MIEN NUI
30. While I...along the road, I saw a friend of mine. A. have cycled B. had cycled C. was cycling D. cycled