选择相应的句子，补全对话。
A．Here you are．
B．I'm six years old． C．It's an egg． D．You're welcome． E．Can I have some bread and cake? |
A：How old are you, Amy?
B：____What about you(你呢)?
A：I'm seven years old．
B：I'm hungry．____
A：OK．____
B：I'd like some milk．
A：Sure．
B：What's this?
A：____
B：Can I have an egg,please?
A：Here you are．
B：Thank you．
A：____
