Class 8 Hindi grammar worksheet, 50 MCQs on how words are built and joined: sandhi and sandhi vichchhed, samas, upsarg and pratyay, avyay, and words that sound alike. These topics come back in the Class 9 and 10 board grammar section, so it's worth getting them right now. The answer key is on the last page. Every answer is explained online: https://www.wizmantra.com/hindi-practice/hindi-grammar-class-8/