On average the fire drill is arranged twice a month in our school, to teach students how to deal with dangerous ________．

1. A.
   states
2. B.
   conditions
3. C.
   situations
4. D.
   positions

On average the fire drill is arranged twice a month in our school, to teach students how to deal

with dangerous_______.

A．states         B．conditions          C．situations            D．positions