从下面框内选句子补全对话，将序号填写在横线上。

A. What colour? B. Good morning. C. Good afternoon. D. A white cap, please. E. Would you like a cap?

Mike: Good morning, Liu Tao.

Liu Tao: , Mike!

Mike:

Liu Tao: Yes, please.

Mike: yellow, orange, red, or white?

Liu Tao: White.