As far as I know, this is a type of music popular in the 1950s, a(n) _____ of jazz and folk music.
He was about to tell me the secret __ someone patted him on the shoulder.
He is the only one of the students who __ a winner of three years.
The scientist did __ experiments to test the new drug.
These plants are watered __ .
Guilin is __ worth __. Have you been to it?