“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 h5/50“How long have you been waiting here?” John asked me.John asked me how long had I been waiting there.John asked me how long have I been waiting there.John asked me how long I had been waiting there.John asked me how long I have been waiting there.Giải thíchĐáp án: C