Language papers carry high importance in mpsc exam. Even if, we are not able to get very high score, an above average score is needed to get good post. Vyakaran — M. Walimbe sugam marathi vyakaran lekhan. Letters- even though no question was asked last year this point is mentioned in syllabus and given nicely in book anivarya marathi by akash ligade.
This is what I learned from my seniors and toppers. In a 2 marker question, UPSC specifically mentions that answer it in 20 words. They asked an essay on Gandhi, I start writing it. I write something like.