_____ is known to us all is that America is a developed country _____ the First World.

  A. Which; belonged to             B. As; belonged to

  C. What; belonging to               D. It, belonging to

_____ is known to us all is that America is a developed country _____ the First World.

　 A. Which; belonging to  B. as; belonging to　

C. what; belonging to   D. It; belonging to

         is known to  us all is that America is a developed country         _________the First World.

       A．Which; belonged     B．As; belonging to     

       C．What; belonging to  D．It; belonging

_____ is known to us all is that America is a developed country _____ the First World.

A. Which; belonging to 　 B. as; belonging to

C. what; belonging to 　 D. It; belonging to

_____ is known to us all is that America is a developed country _____ the First World.

1. A.
   Which; belonging to
2. B.
   as; belonging to
3. C.
   what; belonging to
4. D.
   It; belonging to