AT THIS TIME YESTERDAY ,WHAT

18. - 3 DE KIEM TRA HOC KY II MON ANH HOC KY II THAM KHAOVA DAP AN
Tiếng Anh 3 DE KIEM TRA HOC KY II MON ANH HOC KY II THAM KHAOVA DAP AN

18. At this time yesterday ,what ...,Mr Wilkins ?

A. did you do B. were you doing C. had you done D. have you done