a
(=ausüben) [Amt, Stelle etc] to occupy, to hold
[Dienst] to perform, to discharge form
(=sich kümmern um) to look after, to take care of
[Küche] to see to, to do
[Bus, Schiff etc] [Route] to provide the/a service on
[Dienst] to provide
den Dienst eines Kollegen versehen to take a colleague's place, to perform a colleague's duties