Bộ 10 đề ôn thi học sinh giỏi Tiếng anh lớp 9 có lời giải chi tiết (Đề 2)

Short feature films produced as early as 1922 _______ A. were recorded by optical sensors B. put musicians out of work C. were only effective for dialogue sequences D. preceding talking pic

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Short feature films produced as early as 1922 _______

were recorded by optical sensors

put musicians out of work

were only effective for dialogue sequences

preceding talking pictures

Giải thích

Chọn C