A. It's in the bag. B. Yes, it is. C. No, it isn't. D. I don't know.
It's a cat.
⑴—Where is the cat? A.
—It is in the black cap.
⑵—Where is the bird? B.
—It's in the yellow bag.
⑶—Is your book on the red chair? C.
—Yes, it is.
⑷—Where is the pen? D.
—It's on the book.