—Thanks for your help, but can you do me one more favor, please?
—______, sir．What's it then?

—Thanks for your help, but can you do me one more favor, please?

—______, sir．What's it then?

A．It is nothing                            B．That's right

C．At your service                         D．Never mind

—Thanks for your help, but can you do me one more favor, please?

    —________, Sir．What’s it then?

         A．Just a minute                                                  B．My pleasure                                                    

         C．That’s 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．My pleasure　　　　　　　　　　　　　　

C．That’s right 　 D．At your service

—Thanks for your help, but can you do me one more favor, please?
—______, sir．What's it then?

1. A.
   It is nothing
2. B.
   That's right
3. C.
   At your service
4. D.
   Never mind