Which is the correct option to complete the sentence below?...

Which is the correct option to complete the sentence below?

Abandoned dog now works at a petrol station

Buying petrol is generally a trivial activity. You fill______ your car, head into the shop, possibly pick______a KitKat or motoring atlas, pay the cashier then set______for your destination. Wouldn't the whole process be more enjoyable if there was a dog to brighten up your visit?

(Adapted from http ://www,telegraph,co.uk/pets/news-features/dog-abandoned-petrol-station-now-works-petrol-station/)