Is elephant jumping?
Yes, he is.
Is she jumping?
Yes, she is
Are they sleeping?
Yes, they are
Is he sitting?
No, he isn't
Is the boy sleeping?
No, he isn't
Is he reading?
No, he isn't
Is she speaking?
Yes, she is
Are they flying?
Yes, they are
Is the dog running?
No, he isn't
Is the dog running?
No, he isn't