An ordinary policeman needs todo several _jobs ?
•A policeman has to _standor drive around the whole city to watch the traffic on the roads.For example,a _ traffic policeman spends most time _driving on the road.
The police are _expected to restore order to try to make the public even _peaceful although they may be in danger.
_Ordinarily,a policeman will act as a detective to search for the criminal
About _emergency :In case of a fire,a crash or an accident,_call the police to deal with them becomes people's first choice.
The police do lots of small things we think in our daily life,but we should thank them.We may meet a lot of trouble _without them.