Question

1.     (two;five) of the land in that district     ( he) covered with trees and grass.

Answer 1

1.Two fifths,is表达分数时分子用基数词，分母用序数词，分子大于1时，分母用复数。分数和百分数作主语时，谓语动词的数取决于分数和百分数之后的名词。land 是不可数名词，所以谓语动词用单数。