我的铅笔断了，需要削一下。

My ___pencil is broken, I need to sharpen it.

你能借我一支铅笔吗？

Can you lend me a ___pencil?

我喜欢用铅笔写字，因为写错了可以擦掉。

I like writing with a ___pencil because I can erase my mistakes.