1She wore a mask to protect herself from the dust while painting the room.
2Is it true that the actor wore a mask in the movie to conceal his identity?
3The new policy is just a mask for the company's real intentions, which are to cut costs and fire employees.
4The thick fog acted as a mask, making it difficult to see more than a few feet ahead.
5The makeup artist applied a mask of foundation to the model's face before the photo shoot.