What is this?
electricity
What is this?
creativity
She is using her___.
imagination
This dog has a ___.
problem
The cat has an ___.
idea
What is the ___?
solution
What's this?
a battery
What are the cats running on?
a wheel
What's this?
an invention
These chopsticks are not very ___.
useful
He ___.
failed
He is ___ something.
inventing
He ___.
succeeded.
The cat is ___ to climb on the bed.
trying
