________ in the mountains for a week，the two students were finally saved by the local police．（2005江苏，27）

1. A.
   Having lost
2. B.
   Lost
3. C.
   Being lost
4. D.
   Losing

      in the mountains for a week，the two students were finally saved by the police.

A. To lose                        B. Lost               C. Being lost                   D. Losing