How much is it?询问价格 — 英语填空题
题目
在文具店里，一支钢笔8元，一个笔记本比钢笔便宜3元。莉莉买了一支钢笔和一个笔记本，付给店员20元。请根据情境完成对话填空：
Lily: I want a pen and a notebook, please.
Clerk: OK. The pen is 8 yuan. The notebook is ___ yuan.
Lily: How much is it in all?
Clerk: It's ___ yuan.
Lily: Here is 20 yuan.
Clerk: Here's your change. You can get ___ yuan back.