I’m sorry to keep you _(wait) for a long time 适当形式为什么填waiting

I'm sorry to keep.为什么keep前面加to I'm sorry to keep you_______(wait)so long 英语翻译Yo,What's good.it's your girl Ldy Lickem Ft Maliss V.And this song goes out to my girl LeaneHope you enjoy this babygirlThis ones dedicated to youStay strong,Keep your head up,You know how we do it.i'm Sorry...i'm Sorry...i'm So Sorry..Ju i'm sorry to keep you ----（wait） for a long time I'm sorry to keep you_______(wait) for em for a long time. I'm sorry to keep you waiting.如何划分句子成份? I'm sorry to keep you waiting.对不起,让你久等了是现在完成时? I'm sorry to have kept you waiting so long 和i' m sorry to keep you waiting so long 有啥区别 I`m sorry to hear “I'm sorry to hear I'm feel sorry to I`m sorry ___ you ___ so long.A keeping waiting B to keep waitingC keeping to wait D to keep to wait Sorry to keep you I'm so sorry!I think you must need to know that every thing is changeable.Nothing can keep still. .I'm sorry to keep you ___ for a long time.A.to wait B.waiting C.wait D.waited I'm sorry to keep you （）for a long time.I'm sorry to keep you （）for a long time.a to wait b waiting c waitd waited I’m sorry to keep you _(wait) for a long time 适当形式为什么填waiting I' m sorry to keep you waitting for a long time.这句话为什么用wait的进行时?