at that moment/once in a while/at the same time 有什么区别

英语：at once和at that moment 有什么区别? at that moment/once in a while/at the same time 有什么区别 just then ,the telephone rang .it rang___.A.at once B.immediately C.at that moment选那一个,理由是什马 请详细解释,谢谢：just then, the telephone rang,it rang (at that moment)为啥不用at once/immediately at that moment等于什么 英语翻译有木有错误.并且翻译一下.Once you said you loved me.At that moment.I thought it was forever. at once 与 at the moment的区别 at that moment 与at the moment 的区别 at the moment和at that moment的区别是什么? you know that i was thinking at that time 我说Once you said you loved me.At that moment,I thought it was forever.他说you know that I was thinking at that time 英语单词区别for the moment ,immediately ,at once 的区别 wait for a moment ,i will back at once at the moment 是否等于at this moment或at that moment Just then,the telephone rang.It rang___.(aJust then,the telephone rang.It rang___.(a)at once (b)immediately (c)again (d)at that moment at that moment ；at this moment ；at this time ；at that time分别用什么时态? just at that moment同义词组 at that moment 同义词then不对 at that moment是什么时态标准