Prepositions of Place Quiz: in, at, or on?

My best friend lives ________ Barcelona, a large and famous city ________ Spain 

I've never been _________ Paris, but I'd love to visit one day

I spent the weekend hanging pictures ________ the walls of my new apartment

We can meet __________ the train station and take the train to Birmingham together if you like?

Please can you call me later, I'm _______ work right now, and I can't talk!

The dentist's office is located _________ the 22nd floor, but luckily there is an elevator!

He was _________ the phone for almost an hour talking to his mother!

- Do you post much _________ Instagram?
- No, I try not to spend too much time ______ social media!

There is a really nice table tennis club _________ my street

My parents go __________ holiday every summer ______ Cornwall 