I am sorry ____you waiting.

问题描述:

I am sorry ____you waiting.
to keep
keeping
to have kept

to keep 疯狂英语每日开讲第23课:Sorry to keep you waiting 疯狂英语每日开讲 第二十三课 Sorry to keep you waiting.如果你是个迟到大王,这句话你一定要学:Sorry to keep you waiting.(对不起,让你久候).这句话...