Any changes must be approved by an authorizing official before being entered into the payroll system.
Changes have to be approved by an authorized official before they can be entered into the payroll system.
Changes to the payroll system do not have to be authorized.
I haven't found dentists' offices that work extended hours.
Three magazines had pieces about Slobodan Milosevic.
Don't worry about shelling them.
Obsidian is a powdery rock with little use.
The door was closed tightly.
The teenagers are running around.