______ it ______ for your help, I couldn’t have made any progress.

A. Had; not been                  B. Should; not been

C. Did; not been                   D. Not; been

__________ it __________ for your help, I couldn’t have made any progress.
A. Had ; not been   B. Should; not been   C. Did; not           D. Were; not

______ it______ for your help，I couldn't have made any progress．

______ it______ for your help，I couldn't have made any progress．

A．Had；not been　　　　　　              B．Should；not been

C．Did；not been　　　　　　              D．Not；be

______ it______ for your help，I couldn't have made any progress．

1. A.
   Had；not been　　　　　　
2. B.
   Should；not been
3. C.
   Did；not been　　　　　　
4. D.
   Not；be