What is he doing?
He is putting on his pants.
What are you doing?
I am emptying my cup.
I'm tired. I need to...
...turn off my TV.
My TV is off. I need to...
...turn on my TV.
What are you doing?
I'm reading.
What is she doing?
She's taking off her shoes.
Is this knife sharp?
Yes, it is.
Do we need to sharpen this pencil?
No, we don't.
Do we need to sharpen this pencil?
Yes, we do.
Is this glass full?
No, it is empty.
Is this knife sharp?
No, it's not.