I am so desperately sorry for keeping you waiting 什么意思!

I am so desperately sorry for keeping you waiting 什么意思! I am very sorry for keeping you waiting so long. I am sorry for keeping you waiting for a long time为什么用keepin I am sorry to keep you waiting for so longA I don't think so I'm( )sorry for keeping you waiting so long,括号里用true的正确形式填空 Sorry for keeping you waiting for me so long. ---_____ A.Don Sorry for keeping you waiting for me so long 用That‘s all 还是N 英语选择：-Sorry for keeping you waiting for me so long .-_______ i am sorry to keep you waiting for me so long 最佳答句是什么? I am sorry I _____(keep)you waiting so long. I am sorry you have been waiting so long .BUT i am sorry to keep you waiting so long