for a day or two

for a day or two There're going to stay here for ( ) next month.选哪个A.a day and two B.a day or two C.one or two day D.a day and two days 选择He is going to have a holiday for ()?A a day or two days B one or two days C a year and two The librarian asked him to return the book_____A.in one day or two B.for one or two days C.within one day or two days D.in a day or twoA 和C为什么不对 within a day or two的意思 A day or two is enought I will stay there for ---------A a day or two B one and two daysC a day and twoD one day or two 并说一下这种词组的固定用法 John was ill ,so he had to stay in bed for ( )A.one day and two days B.a or two days C.a day or two D.one and 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 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 he will be back one day or two还是a day or two为什么 翻译:you should take a good rest.drink a lot of waterand stay in bed for a day or two. 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? 等!for a moment or two是什么意思 She insisted that we ____there for another day or two .A would say B could stay C stay D stayed 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? --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