从方框中选择合适的选项，补全对话。

Sam: Today is Halloween!

Mum: Sorry, you can't.

Sam: But I'm hungry! Can I have bread?

Mum:

…

Sam: Trick or treat!

Mum:

Sam: Happy Halloween, Mum!

Mum:

A. Sorry, you can't. B. Happy Halloween, Sam! C. Thank you! D. Can I have some cake? E. Here are your sweets.