What are they doing?
playing cards
What's this girl doing?
playing the piano
What's she doing?
climbing
What's this person doing?
skiing
What's she doing?
watching birds / bird watching
What sport is he playing?
basketball
What's he doing?
taking photos
What's she doing?
running
What are they doing?
playing ice hockey
What's she doing?
rollerblading / in-line skating
What's he doing?
he's surfing
What's he doing?
he's snowboarding
What's he doing?
playing golf
What is she doing?
painting
What are they doing?
they're ice skating
What's he doing?
skateboarding
What are they doing?
watching TV
What is this person doing?
drawing
Where's this?
cinema / movie theatre
What's she doing?
listening to music
What's he doing?
fishing
What is this person doing?
solving a puzzle / doing a jigsaw (puzzle)
What's she doing?
reading
What are they doing?
playing video / computer games
What are they doing?
playing board games