“How long have you volunteered at this hospital?” Linda asked me.

A. Linda asked me how long had I volunteered at that hospital.

B. Linda asked me how long I have volunteered at this hospital.

C. Linda asked me how long I had volunteered at that hospital.

D. Linda asked me how long have I volunteered at that hospital.

Đáp án
C. Linda asked me how long I had volunteered at that hospital.

Câu hỏi thuộc Bài tập:

[014] - Bài tập Luyện thi Tiếng Anh THPT Quốc gia - Chuyên đề: CÂU GIÁN TIẾP (Bài tập 2)