优优班--学霸训练营 > 知识点挑题
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            • 1.
              _________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
            • 2.
              They sold _____ boxes of such sweets last week.

                 

              A.four dozen     
              B.four dozens      
              C.four dozens of     
              D.four dozen of
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