As far as I know, this is a type of music popular in the 1950s, a(n) _____ of jazz and folk music.

Although it is not our normal      to give credit in our shop,this time I think we should consider the matter more closely.

After the earthquake, the government turned a school into a      for the victims of the earthquake.

The young man works very hard from a(n) _____to become rich.

Computers are of great        to the development of science and technology.