一两天是one day or two还是 a day or two

一两天是one day or two还是 a day or two 一两天 是a day or two 还是one day or two 是one or two year还是one or two years he will be back one day or two还是a day or two为什么 a day or two,one or two days 后面的动词分别用单数还是复数? 有没有：one day or two you will have to spend_writing your report herea.one day or two days b.one day or two c.a day or two d.two days or one答案是c 为什么 i hear he will come in_ a .a day or two b.one day or two c.one and two days d.one day or two days 请从语法角度 选择啊正确答案是A 为什么不选b？ it is a good idea to remember one or two words a day 还是 it is a good idea to remember one or two word a day a year or two 还是one year or two a one-day holiday = one day's holiday的问题这个是同义词我知道可是我想知道如果变复数 比如两天 两个又都是什么样子?第一个是不是 two one-day holiday第二个是不是 two day's holiday?知道的请告诉我一声 one days or two days,one days or two,one or two day,one and two days那个对啊?我怎么觉得都不对啊.是不是都不对,我感觉是这样的. 英语中一两分钟怎么表达?是one or two minutes 还是one minute or two 还是 a minute or two The biologist has been here for ______.A.one day or two B.one or two days C.a day or two days D.one and two days答案是选B的,可是我觉得A,C也可以啊,请问这是为什么啊?英语书上有这样的用法a tear or two =one or two tears It will take us ____to finish the workA.a day or two B one or two day C a day and two D one or two days.为什么? --How long will you stay there?--For__.A.one and two days B.one and two day C.one or two day D.a day or two a day or two is enough 和one or two reasons are supported中的be动词不同是因为主语的单复数不同还是意思的不同?前者为什么用is 后者为什么用are 求详解 我不知道选什么：---How long will you stay here?--- For _________.A one and two day B.one and two days C.one or two days D.one or two这是考察的什么知识点呢?