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Câu hỏi: Mark 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.
Robert A. Mooog developed an electronic device that could be used with playing synthesized music.
A. developed
B. be
C. with
D. synthesized
Robert A. Mooog developed an electronic device that could be used with playing synthesized music.
A. developed
B. be
C. with
D. synthesized
when - Giới từ with không dùng với động từ use. Thay when cho phù hợp về ngữ pháp.
Đáp án C.