American folk music originated with (1) people at a time when the rural population was isolated and music was not (2) spread by radio, records, or music video.

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American folk music originated with (1) ______ people at a time when the rural population was isolated and music was not (2) ______ spread by radio, records, or music video.

even

still

until

yet

Giải thích

Đáp án D
Giải thích: Yet: bây giờ, cho đến bây giờ . Not yet: chưa, còn chưa...
Still: vẫn, vẫn còn
Until: cho đến khi
Even: thậm chí (phó từ)
Dịch: Âm nhạc vẫn chưa lan rộng bởi đài phát thanh, âm thanh, đĩa CD, nhạc DVD.