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Read the text. Use the appropriate forms of the words on the right to complete it.
Sometimes jazz concerts are broadcast on the radio and on television. We(1) ... sure that you (2)... about this type of music. It (3)... in the United States when the (4)... Africans (5)... to North America. In those years many native songs (6)... by (7)... and the music of (8)... homeland (9)... on the new continent.
Modern (10)... write that jazz (11)... up of the music of West Africa.

be, hear
appear
one, bring
sing, they
they, play
science, make

1) are 2) have heard 3) appeared 4) first 5) were brought 6) were sung 7) them 8) their 9) was played 10) scientists 11) was made up