"an or two days""one day or two""one or two days""one and two days"请说明这些词组的用法及语法,最好附上语句.并说明哪些用法有,哪些用法没有.尽快!其它都没有这样的写法？one or two 用法呢？语法呢？

an or two daysone day or twoone or two daysone and two days请说明这些词组的用法及语法,最好附上语句.并说明哪些用法有,哪些用法没有.尽快!其它都没有这样的写法？one or two 用法呢？语法呢？ They will finish the work______A.after one and two days B.after one or two days C.in one and two days D.in one day or two one and two days,one day or two ,one to two days,这样的表示都正确吗? They are making a travel in London and will stay here for____A.one or two daysB.one days or twoC.one or two dayD.one and two days one or two days 用什么be动词? 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. a day or two,one or two days 后面的动词分别用单数还是复数? several days=?several days=quite a few days还是=one day or two days 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 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 You'll have to spend ----writing your report here A.one day or two days B.one day or two C.a day or two .D.two days or one 为什么 You'll 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 为什么 He will be all right in __________A one day or two daysB one or two days C one and two days D one or two day 请讲清选什么和理由,并交代清其他选项错误的理由 He will be back in___.A one day or two B one or two days C a day or two days D one point five days 求大神解析下ABC三个的区别 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为什么不选b? 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？ I'll be back in __________a one day or twob a day or twoc a or two daysd one day or two days选哪个？为什么？