What's this?
laptop
What's she doing?
She's chatting online.
What's this?
tablet
What's this?
keyboard
What's this?
camera
What's this?
Game console
What's she doing?
She's sending an email.
What's this?
mobile phone
What's this?
microphone
What's this?
printer
What's this?
mouse
What's he/she doing?
He/she is texting a friend.
What is she doing?
She's talking on the phone.
What's he doing?
He's surfing the internet
What are they doing?
They are taking a selfie.
What are these?
speakers
What are you doing?
I'm downloading a song/video/movie, etc.
What are these?
headphones
What's this?
screen