请问：at once ,in a moment ,in a hearbeat ,in a snap,on the spo

请问：at once ,in a moment ,in a hearbeat ,in a snap,on the spo at the moment,for a moment,in a moment,on the momentm.的异同? in a moment ,at a moment ,on a moment ,for a moment 的区别 in a mimute =at the moment at that moment/once in a while/at the same time A.at the moment B.the moment C.for the moment D.in a moment的 for a moment,for the moment,the moment,in a moment,at the mo at the moment和 in a moment 用于什么时态 I saw him ____hurry at the moment.A in a B in C on D on a 为什 at the moment;for the moment;the moment;in a moment区别 for a moment ,in a moment ,at a momet,for the moment 的区别是什么? at the moment,at that moment,in a moment,a moment ago的区别与具体翻