The cat / dive (-)
The cat isn't diving.
It / rain (+)
It is raining.
He / sing (+)
He is singing.
Salem / have breakfast (?)
Is Salem having breakfast?
Is he playing chess?
Yes, he is.
Bart / listen to music (-)
Bart isn't listening to music.
I / drink juice (+)
I am drinking juice.
Are they swimming?
No, they aren't.
I / do my homework (+)
I am doing my homework.
Are they dancing?
Yes, they are.
Claire / cook (+)
Claire is cooking.
Is SpongeBob reading a book?
No, he isn't.
They / eat (?)
Are they eating?
The bear / have lessons (-)
The bear isn't having lessons.
He / run (+)
He is running.
I / have a shower (-)
I'm not having a shower.