HÃY CHỌN MỘT ĐÁP ÁN ĐÚNG NHẤT (A, B, C HOẶC D) CHO MỖI CÂU SAU

45. - ON THI TRAC NGHIEM TIENG ANH 12BAM SAT
ON THI TRAC NGHIEM TIENG ANH 12BAM SAT

45. Before he ________ to bed, he ________ his homework.

A. went/ has done B. went/ had done C. goes/ have done D. goes/ did