As a matter of fact , this sofa is now an antique which served ______ a bed in the past .

      A．as    B．for    C．to         D．with

As a matter of fact , this sofa is now an antique which served ______ a bed in the past.

1. A.
   as
2. B.
   for
3. C.
   to
4. D.
   with

As a matter of fact , this sofa is now an antique which served ______ a bed in the past .

      A．as    B．for    C．to         D．with

As a matter of fact , this sofa is now an antique which served ______ a bed in the past .