秋天的树叶变成了黄色。

The leaves turn ___yellow in autumn.

别那么胆小，连尝试新事物都不敢。

Don't be so ___yellow that you won't even try new things.

她的牙齿因为吸烟而变黄了。

Her teeth became ___yellow from smoking.

她买了一条黄色的围巾来搭配她的外套。

She bought a ___yellow scarf to match her coat.