Grammar as an Important Part of Writing
Sooner or later each of us can face forgetting. Information is always stored in our head for some time and as soon as we don't need it, we start fogretting or replacing it with something new. Some complicated words can be replaced with new ones - simpler or more precise, some grammar rules can become lost in deepness of our memory.
How to Deal With That?
Most often, people use different memorization techniques to keep memory capacity on a high level and to get a chance to remember more. A good way of memory training is using crosswords, puzzles, quizzes. These ways are great for refreshing some facts in your head and getting a precious opportunity to know more.
Here's an interesting quiz, I've come across with recently. Try it yourself!