Another useful link from englishgrammar.org to improve your sentence formation and word use:
Editing Exercise
Editing Exercise
After teaching English for some time, I find that students often make similar errors in their learning, so I decided to create a blog for those who are native Spanish students. This blog includes advice, recommendations, tips, and links to websites, which will help you to improve your English by learning from your mistakes and enabling you to find answers to your questions. Enjoy learning English!
