The Great Wall winds its way ____high mountains, ___ deep valleys and ___ great deserts.    A. on, across, through  B. over, through, through  C. over, through, across D. on, in, across

The Great Wall winds its way _________ high mountains, _________ deep valleys and _________ great deserts．

1. A.
   on, across, through
2. B.
   over, through, through
3. C.
   over, through, across
4. D.
   on, in, across

The Great Wall winds its way ____high mountains, ___ deep valleys and ___ great deserts.　 A. on, across, through B. over, through, through C. over, through, across D. on, in, across