I really don't know _____ I put my wallet．

         A．where was it                                      B．it was where that

         C．where was it that．                               D．where it was that

I really don’t know _______ I put my wallet．

       A．where was it       B．it was where that       C．where it was that     D．where was it that

I really don't know _____ I put my wallet．

       A．where was it                 B．it was where that

       C．where was it that．           D．where it was that

I really don’t know ________ I put my wallet after I paid the bill.

A．where was it? B．it was where that

C．where it was that D．where was it that

I really don’t know _________ I put my wallet after I paid the bill．

A. where was it?? ????????????? ???????????????????? B. it was where that

C. where was it that? ????????????? ???????????????? D. where it was that