______ there was no bandage available, she tore off her sleeve and tied it around his wrist a little above the bleeding point ______ him from losing too much blood.

  ______ there was no bandage available, she tore off her sleeve and tied it around his wrist a little above the bleeding point ______ him from losing too much blood.

1. A.
   For; to save
2. B.
   Because; saving
3. C.
   Since; save
4. D.
   As; to save

______ there was no bandage available, she tore off her sleeve and tied it around his wrist a little above the bleeding point ______ him from losing too much blood.

　 A. For; to save　 B. Because; saving　 C. Since; save　 D. As; to save