I am sorry to ( ) you waiting so long
i am sorry to keep you waiting so long
I am sorry I _____(keep)you waiting so long.
I am sorry you have been waiting so long .BUT
I am very sorry for keeping you waiting so long.
[D100] I am sorry to _____ you waiting outside so long.
i am sorry to keep you waiting for me so long 最佳答句是什么?
I'm sorry to keep you waiting so long
I'm sorry to have kept you waiting so long.
I am sorry to have kept you waiting so long.这句为什么用to have ke
I'm sorry to have kept you waiting so long 和i' m sorry to ke
I am sorry you have been waiting so long .but it will still
I am sorry to keep you waiting for so longA I don't think so