I am sorry ____you waiting.
I am sorry ____you waiting.
I am sorry I _____(keep)you waiting so long.
I am t__ sorry I have kept you waiting long.
I am sorry you have been waiting so long .BUT
I am very sorry for keeping you waiting so long.
i am sorry to have kept you waiting.
i am sorry to keep you waiting so long
I am sorry to keep you_____ A.to wait B.waiting C.waiting fo
i am sorry to keep you waiting keep you waiting 后面能接动名词吗
1 I am sorry 是不是主系表结构 I am sorry to keep you waiting.句子中的to
I'm sorry ____you up yesterday.
I am sorry to keep you waiting for so longA I don't think so