"How long have you lived in Hanoi?" said my friend.

A. My friend asked me how long have I lived in Hanoi.

B. My friend asked me how long had I lived in Hanoi.

C. My friend asked me how long I had lived in Hanoi.

D. My friend asked me how long I have lived in Hanoi.

E9 TĐ- Unit 3 (2)