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。

A: Dad!  Help me find it, please.

B: Is it in your pencil box?

A:

B: I think it's on your desk.

A: Yes.  Er…where's my schoolbag?

B: It's on the chair.

A: No, it's not mine.  My schoolbag is red.

B: Oh, yours is on your bed.

A: Yes, Dad.  Thank you.

A. It's on my desk. B. Where is my eraser? C. It's here, on my bed. D. No. I can't see it. E. It's my sister's.