A pen and a pencil的用法和样例：
- In addition to an album, I gave him a pen and a pencil.
- A pen and a pencil are in my pencil-box.
- He needs a pen and a pencil.
- I want a pen and a bottle of ink.
- She lined the white paper with a pen and a ruler.
- There are two pens and a pencil in my pencil-box.