补全对话，把正确答案的序号填在横线上。

A. Thank you so much. B. What colour is it? C. Excuse me. D. My schoolbag is heavy. E. What's in it?

A:  I lost my schoolbag.

B:

A: It's red.

B: OK.

A: A Chinese book, an English book, a maths book, a pencil box, four notebooks and two storybooks.

B: Here it is!

A: