______'s Leaves of Grass is a collection of poems written in free verse.

A．Western Australia Supply and Transport
B．Webster Aptitude Standard Test
C．Welsh Association of Sail Training
D．White Anglo-Saxon Protestants

A．the revival of some North American and European CBDs
B．the problems facing the development of U.S. downtown areas
C．the moving pattern of the U.S. middle class
D．the possible solutions to the fiscal problems