What is he doing?
He is cutting a line.
What is this cat is doing?
sing + sang
What are they doing?
whispering
What is this girl is doing?
drawing
What is this girl is doing?
smelling
What is he doing?
He is surfing.
What is he doing?
thinking
What is she doing?
thinking+thanking
What is this dog is doing?
dancing
Where’s this?
outside
What are B and her friends are doing?
playing games