①A. Is it a dog? B. Yes, it is.
②A. Is it a monster? B. Yes, it is.
③A. How to do it? B. I don't know.
④A. Help!!!!
⑤A. Is it a cat? B. No, it isn't. It's a kite.
A. Yes, it is. B. No, it isn't. C. Is it a panda? D. Is it a pencil? E. What's that?
Yes,it is.
Where's the pencil?
No, it isn't.
Is it in the green bag?
Is it in the blue bag?