根据句意从下面方框中选出合适的句子完成对话。

A. Where's my pencil case? B. Don't shout. C. It's under the English book. D. No. Don't eat in the classroom. E. No, it isn't.

Wang Bing: Hello, Liu Tao.

Liu Tao：

Wang Bing: Sorry, would you like a cake?

Liu Tao：

Wang Bing: I'm sorry.

Liu Tao: Is it in your schoolbag?

Wang Bing:

Liu Tao: Oh! Look!