One day a certain period,only one person I secretly

One day a certain period,only one person I secretly one a day a certain one day,some day,other day,a day,的区别 a day与one day 区别 one day a day 区别 谢谢 one day和a day什么区别 one a day一天吃几粒 i am certain that i will be on the moon one day 【 同义句 i am certain ____ _____ on the moon some day,a day和one day的区别 One thing certain,that is You say you want to go with me to a certain period of a day. one apple a day,keep a docter the day,one day,a day,on day的区别the day,one day,a day,on day,分别解析一下这四个词 once a day=one time a day? They have a PE lesson every day.(用now替换every day改写句子) 改错on one morning he went to a certain library to read some books 翻译：Curiosity is one of the most permanent and certain characteristics of a vigorous intellect.