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