—Yes, ___________.

⑴Quack, quack! What's it?            A. It's a mouse.

⑵Moo, moo! What's it?                 B. It's a duck.

⑶Squeak, squeak! What's it?         C. It's a cow.

⑷Is it a hen?                                    D. No, it isn't a horse. It's a cow.

⑸Is it a horse?                                  E. Yes, it is.

— He is my uncle.