—It's           .

⑴Is the boy eating?                    A. It's hers.

⑵What is Amy doing?                B. They're mine.

⑶Whose bike is it?                     C. Yes, he is.

⑷Whose books are these?         D. It's a tiger.

⑸What's this?                              E. She's shopping.

A Yes, it is.

B Excuse me, Lily. Is that dog sleeping?

C Is it your dog?

D Whose dog is it?

E It's Lucy's.

F No, it isn't. My dog is black.

(Tom is at John's home.)

Tom: Wow, the picture is so beautiful.

John: It's my sister's.

Tom: Oh.

John: It's in the living room.

Tom:

John: No, it isn't. It's sleeping.

Tom:

John: Yes, of course. Mew, mew, come here.

the monkey doing?