读对话，选择正确的句子补全对话。

A. Is this your schoolbag? B. What colour is your schoolbag? C. What's in it? D. My bag is small. E. No, it's red and yellow.

A: Excuse me. I lost my schoolbag.

B:

A: It's red.

B: Is it all red?

A:

B:

A: A storybook, three notebooks and some candies.

B: OK. Let me see.

A: No, this bag is big.

B: How about this one?

A: Yes, it is. Thank you very much.