Jawaban:

1. A short story is a piece of prose fiction that can typically be read in a single sitting and focuses on a self-contained incident or series of linked incidents, with the intent of evoking a single effect or mood
2. A letter is a written message conveyed from one person (or group of people) to another through a medium
3. A formal letter is one written in an orderly and conventional language and follows a specific stipulated format. These letters are written for official purposes only.
4. An informal letter is a non-official letter which we usually use to write to our friends, family or relatives.These letters are personal letters that are not used for official purposes.