The study of traffic accident s_______that a large number of

The study of traffic accident s_______that a large number of people died of serious.
Do you know how to s____ in a traffic accident.
Taiwan has been part of China since a_____times.
In China summer l__ from June to August.
Something must be done to prevent prices from r____.
-May I speak to Mary?
-Sorry,she is out at p__.