“How long have you been waiting here?” John asked me.

A. John asked me how long had I been waiting there.

B. John asked me how long have I been waiting there.

C. John asked me how long I had been waiting there.

D. John asked me how long I have been waiting there.

Đáp án
C. John asked me how long I had been waiting there.

Câu hỏi thuộc Bài tập:

[013] - Bài tập Luyện thi Tiếng Anh THPT Quốc gia - Chuyên đề: CÂU GIÁN TIẾP (Bài tập 1)