填职业：1.A ______ takes people somewhere they want to go.
2.A ______ is in charge of all the cooks in a restaurant.
3.A ______ does some paper work in the office.
4.A ______ looks after a huge collection of books.
5.A ______ receives guests,answers the phone or arranges appointments.
6.A ______ decides cases in a lawcourt.