Sorry for keeping you waiting for me so long 用That‘s all 还是Not at all我认为都可以解释为没关系,为什么参考答案会选That‘s all ,求原因

I am sorry for keeping you waiting so long. i am (terrible) sorry for keeping you waiting for such a long time I am so desperately sorry for keeping you waiting 什么意思! 如果一个外国人跟你说sorry for keeping you waiting,该怎样回答呢? Sorry for keeping you waiting today.这句话对吗?如果不对,是为什么? sorry to keep you so long和sorry for keeping you so long 有什么不同啊 I am sorry for keeping you waiting for a long time为什么用keeping?并解析一下整个句子的成分 I'm( )sorry for keeping you waiting so long,括号里用true的正确形式填空 Sorry,Sa-Rang-HaeHae-Yo!啥意思? I am very sorry for keeping you waiting so long.填空I am very sorry___ keeping you waiting so long.I am sorry___ trouble you.I am sorry____ he isn’t here at the moment. keeping It's a keeping for the place for keeping books(什么意思) （ ） a place for keeping books. For skiing,keeping warm is very important . 英语选择：-Sorry for keeping you waiting for me so long .-__________.A.Yes,don‘t say soB.You can’t do it againC.Never mindD.That‘s right Sorry for keeping you waiting for me so long 用That‘s all 还是Not at all我认为都可以解释为没关系,为什么参考答案会选That‘s all ,求原因 英语翻译tell me lie nu virgos l.m.l.sorry for my love.i am sorry for my grief i do everything around you trying to comfort your be lie f.sorry that my hope is still flashing in my soul i feel lovely,i feel lonely is it rise or is it fall?keeping