_______from the top, the 2008 Olympic stadium in Beijing looks just like a bird's nest made of tree branches.?

A. To see        B. See     C. Seeing           D. Seen?

_______from the top, the 2008 Olympic stadium in Beijing looks just like a bird's nest made of tree branches.

1. A.
   To see
2. B.
   See
3. C.
   Seeing
4. D.
   Seen