Mark the letter A B C or D on your answer sheet to indicate
Câu hỏi
Nhận biếtMark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
The vacuum tube did an important contribution to the early growth of radio and television.
Đáp án đúng: B
Lời giải của Tự Học 365
Đáp án B. did => made
Cấu trúc cố định: make a contribution to...: đóng góp vào
Dịch: Ống chân không đã đóng góp quan trọng cho sự phát triển ban đầu của đài phát thanh và truyền hình.
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