What are they?
They are germs.
What's the matter with him?
He has a fever.
What's the matter with him?
He has a cough.
What's the matter with her?
She has an earache.
What is she doing?
She is sneezing.
What's it?
It's a box of tissue.
What is it?
It's a thermometer.
What's the matter with him?
He has a stomachache.
What's it?
It's a first-aid kit