单选题 Since last year, she ______ of the long distance.
  • [A] have covered three fifth
  • [B] have covered three fifths
  • [C] has covered three fifths
  • [D] has covered three fifth


【正确答案】 C
【答案解析】[解析] 本题考查分数的用法和主谓一致。本句是现在完成时，因主语是第三人称单数，故用has；分数由基数词作分子，序数词作分母构成，分子若大于1，分母用复数形式。