The hacker page was so helpful. The reason of that is I learned which parts of grammar I have mistakes and I tried to improve myself with this awesome source. Also, I think the examples of the hacker page are very helpful, because you can easily see what we need to solve and easy to select the correct one. I`ve learned some of these topics in my English education which helped me a lot to solve these questions and understand what is going on. Plus, I learned that with a single word sentence structure can change a lot. The meaning will be different with a single comma, wrong word choice, so on. In fact, we have learned in the class that clear sentences and understandable word choice is the most important issue in essays. Therefore, hacker page is an excellent source which might help to a person who wants to write a paper for her or his class. For instance, active and passive voice is one of the most scary nightmare for students, but hacker page gave me wonderful questions which helped me understand the difference of these two grammar topic. Overall, I find hacker page really helpful for those who have problems with these topics. Some examples that I`ve learned in this page;
Which one is active voice?
-Jane was encouraged by her supervisor to apply for the new position. (Passive)
-Jane`s supervisor encouraged to apply for the new position. (Active) The reason of that is supervisor is actor which is a subject.