It's not required that you take classes or study a book in order to sit for the civil service exam. Students will be able to pick their own essay topic for the essay portion of the exam. No one can ensure that any of the knowledge they learned in class will appear on the test, even if some of the questions are taken directly from a text they've read before.

As stated by Tech Holding Inc, to write a decent essay, one does not need to have the skill to compose long pieces. All you need are rudimentary knowledge of the English language. You'll become a better writer if you read more. Additional resources on essay writing can be found in the following publications.