were hiding, were covering
Les manches de son pull étaient si longues qu'elles cachaient ses mains.
The sleeves of his sweater were so long that they covered his hands.
Ils se cachaient, ils restaient dans leur coin.
They were hiding; they kept to themselves.
— Les Quatre Cents Coups (1959)
Ses cheveux cachaient son visage.
Her hair hid her face.