为什么two fifths of the population后加are,而two fifths of the land

为什么two fifths of the population后加are,而two fifths of the land two fifths of the population 后加is还是are?many kinds of polutio .Two fifths of the population in this area__ 80%population are还是is famer(S?) two fifths of the population Two fifths of the books are sold out 中文意思 Two fifths of the land iin that country ____covered with tre Two fifths of the land in that district ( ) covered with tre Two fifths of the building was destroyed in the fire Two fifths of the students in our class ______ boys. the population is large and about four fifths of it are farm two fifths与two-fifths的区别 By the year 2025,four fifths of the population will be livin