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