A. produced in 1926, isn't it?
B. has produced in1926, hasn't it?
C. was produced in 1926, wasn't it?
D. was producing in 1926, wasn't it?
C
Baird produced the first TV picture in 1926, didn't he?
⇒ Đáp án đúng: The first TV picture was produced in 1926, wasn't it?
Dịch: Bức ảnh TV đầu tiên được sản xuất vào năm 1926, phải không?
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