---Thanks for your help, but can you do me one more favor, please?
--- _______, sir.What's it then?
A.Just a minute B.It's very nice of you C.That's all right D.At your service
---Thanks for your help, but can you do me one more favor, please?
--- _______, sir.What's it then?
A.Just a minute B.It's very nice of you C.That's all right D.At your service
D
at your service 意思是“听候你的吩咐”。