6. About 120 people ... with the virus of bird flu since it...in Asia in 2003.
A. have infected/ spread B. have been infected/ spread
C. were infected/ has spread D. have been infected/ was spread
Bạn đang xem 6. - File thứ 3: bkt_45so_1ki_2lop10chuan_de_gui2017-2018_301201810