翻译,我有点事,我先走了(客气的说)

Sorry, I've something to do, so I gotta go. See you

I got something to do at the moment..so I need to go

Excuse me, I have to go now for I have something to deal with.

Sorry I have to go now.

sorry,i still have some important things to do. can i go now..

我翻译的不一定对．．．因为是个半调子英语水平啊

I'm sorry that I'v something to do and have to go now .

Excuse for my leaving for something urgent.