______of the land in that district ______ covered with trees and grass.

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问题 ______of the land in that district ______ covered with trees and grass.

选项 A、Two-fifth; is
B、Two-fifth; are
C、Two-fifths; is
D、Two-fifths; are

答案C

解析 分数的分子用基数词,分心用序数词表示。如果分子大于1,序数问后加-s。分数和百分比作主语时,谓语动词的形式取决于分数和百分比后的名词。句子中的主语land是单数,谓语动词要用 is covered。
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