阿摩線上測驗
27.Flamenco is believed ________in a southern province of Spain, but no one knows exactly when or how it came about.
(A) to originate
(B) to have originated
(C) originating
(D) that has originated
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統計： A(63), B(128), C(47), D(83), E(0) #3067404
統計： A(63), B(128), C(47), D(83), E(0) #3067404
