eraser

铅笔的橡皮擦在笔尾。

The ___eraser is at the end of the pencil.

橡皮擦掉了错误的字母。

The ___eraser removed the wrong letter.

我需要一块橡皮来改正这个拼写错误。

I need an ___eraser to correct this spelling mistake.

我丢了一块橡皮，所以又买了两块。

I lost an ___eraser, so I bought two more ___erasers.