他用力在石头上刮掉鞋子上的泥巴。

He ___scrapes the mud off his shoes against the rock.

我的行李箱轮子在粗糙的地面上发出刺耳的摩擦声。

The wheels of my suitcase ___scrape harshly on the rough ground.

他们勉强凑够了学费。

They ___scraped up enough money for the tuition fees.

她在操场上摔了一跤，膝盖上擦破了一点皮。

She fell on the playground and got a small ___scrape on her knee.