那辆旧车的门生锈了。

The old car had a ___rusty door.

它非常生锈，但我重新油漆了它，现在它看起来像一辆新自行车。

It was very ___rusty but I repainted it and now it looks like a new bike.

暴风雨后，金属屋顶变得生锈了。

After the storm, the metal roof became ___rusty.