有一道改错题,把one word or two 改成a word or two,请问为什么这么改?

有一道改错题,把one word or two 改成a word or two,请问为什么这么改? a word or two ,one or two words 有什么区别 ___ is misused in the sentence.A.A word or two B.One or two so a word or two can be an expression of one's A word or two is misused in the sentence a year or two 还是one year or two when you are reading fast ,your eyes will be one or two word he will be back one day or two还是a day or two为什么 a year or two 与 one or two years有何区别 one or two in one or two a hybrid is a word made up of elements belonging to two or m