WHAT ARE THEY DOING?
THEY ARE PLAYING.
WHAT IS SHE DOING?
SHE'S USING THE COMPUTER
WHAT IS HE DOING?
HE IS PLAYING A GAME.
WHAT IS SHE DOING?
SHE IS COUNTING.
WHAT ARE THEY DOING?
THEY ARE WRITING.
WHAT IS HE DOING?
HE'S READING A BOOK.