In, at and on are prepositions that indicate time but are used differently based on context. "In" refers to long periods of time like days, nights, mornings. "On" refers to specific days. "At" refers to a specific time. The document provides examples of how each preposition is properly used and includes an exercise for readers to practice using the prepositions of time correctly.
![In, at and on ,[object Object]](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)