根据对话内容，从方框中选出合适的句子，填在对话空缺处，使对话内容完整、连贯，两项多余。

A: Alice, can I use(用) your eraser?

B: OK. Here you are.

A: I don't know. I can't find it.

B:

A: No, it isn't. My pen and ruler are in the pencil box.

B:

A: Oh, it's an eraser.

B:

A: No, it isn't. It's black but mine is white.

B:

A: Wow, you're right. It's in it. Thank you very much.

B: You're welcome.
 

A. Is it in your pencil box? B. Is that yours? C. But where is your eraser? D. I think your eraser is in your schoolbag. E. What's that under the chair? F. How do you spell it? G. Are they yours?