Helen: Are these your  ?

Eric: No, they aren't. They're hers.

Helen: Is that   schoolbag

Eric: No, it isn't. It's  .

Helen: Is this your pencil?

Eric: Yes, it is. It's  .

Helen: Excuse me, Grace. Are   your books?

Grace: Yes, thank you.

Helen: You're welcome.

A: Excuse me, Sonia. Is this your schoolbag?

B: No, it isn't. My schoolbag is here. You can ask the girl in red. I think it's he.

A: OK. Excuse me. Is this your schoolbag?

C: Oh, yes.

A: Here you are.

C: Thank you very much.

A: That's all right. Oh, what's your name, please?

C: My name is Jenny.

A: Are you in Class Two?

C: No. I'm in Class Eight. And what's your name?

A: Ah, it' s a secret(秘密). Goodbye.

C: Bye.

The pen is , .

This blue ruler  .

 ,  .