In no case ________ what you have done for us and at no time ______ your kindness. .      [ ]

A. I shall forget; I will forget          

B. shall I forget; shall I forget    

C. shall I forget; I shall forget          

D. forget I shall; forget I shall

I tried several jackets on, but         of them looked good on me.

A．both

B．either

C．none

D．neither