What's this? (RIDING A BIKE / RIDING A SCOOTER)
riding a bike
What's this?
chatting online
What's this?
skipping
What's this?
playing computer games
What's this?
watching TV
What's this?
skiing
What's this?
painting
What's this?
skateboarding
What's this?
reading a book
What's this?
playing the guitar
What's this?
cooking
What's this?
walking the dog
What's this?
playing football