You grandfather / young - ?
Is your grandfather young?
the hamster / thirsty -
The hamster isn't thirsty.
the organ / how heavy ?
How heavy is the organ?
their classroom / where ?
Where is their classroom?
her birthday / when?
When is her birthday?
polar bears / cold - (not)
Polar bears aren't cold.
your teacher / angry ?
Is your teacher angry?
how old / his parents?
How old are his parents?
