She/cry
Is she crying?
We/read
Are we reading?
I/study
Am I studying?
Are the people jumping?
Yes, they are.
Is the man sitting?
No, he isn't.
Is he eating pizza?
Yes, he is.
Is it driving?
Yes, it is.
Are they playing basketball?
Yes, they are./No, they aren't.
He/run
Is he running?
You/sleep
Are you sleeping?
Homer/study
Is Homer studying?