When I came to myself, I found myself  ____and  _____  a group of people.     [ ]

A. to be at hospital; surrounded by    

B. at hospital; surrounding    

C. at hospital; surrounded by    

D. at hospital; to be surrounded

1/10，2/15，1/6，1/5，（）

A．7/30 

B．1/7 

C．1/3 

D．1/30