1. Is Emma riding a horse? (ride)
No, she isn't.
Is she dancing? (dance)
2. Is he behind Willow? (hide)
Yes, he is.
3. Are they wearing blue T-shirts? (wear)
Yes, they are.
4. Are they playing the piano? (play)
No, they aren't.
5. Is she singing? (sing)
Yes, she is.