___________ of the land in the district _______ covered with trees and grass.

________ of the land in that district _______ covered with trees and grass.

A．Two fifth; is          B．Two fifth; are    C．Two fifths ; is            D．Two fifths; are

_____ of the land in that district _______ covered with trees and grass.

       of the land in that district          covered with trees and grass.

       of the land in that district          covered with trees and grass.

A．Two fifth；is                           B．Two fifth；are

C．Two fifths；is                          D．Two fifths；are