This is a s__1____ of twin brothers, Justin and Paul. Their friend Susan calls them for h__2____. Justin and Paul drive to Hill Building q____3____. Three man in police uniform p___4___ them into a green van. They are not p__5_____. They are the robbers. The twin brothers aren’t a____6___. Paul opens the back door of the van w__7____ a knife. They take different r_______ to the police station. They meet the robbers a____9__ in the police station. They are s____10_____. The policemen stop the van because the back door of the van is open.

井控工作包括哪些内容？