An old man with steel rimmed spectacles and very dusty clothes sat by the side of the road. What is the antonym for dusty?

He became rich overnight. What part of speech is 'overnight'?

The nightingale is a singing bird. In this singing is a/an --

I Came home after the rain -----.

The Doctor took the round in the hospital. Here 'round' is a/an ---

Alumni is the plural from of