MR.BAIRD PRODUCED THE FIRST TV PICTURE IN 1962, ....

câu 23. - DE KIEM TRA HKI 1011 câu 23. - DE KIEM TRA HKI 1011
DE KIEM TRA HKI 1011
Câu 23. Mr.Baird produced the first TV picture in 1962, ....?A. did he B. doesn't he C. didn't he D. does he