I need to improve my grammar. Should I do more grammar exercises?
The thing about grammar exercises is that they're really good at helping you identify if you have an issue, but they're not really good at helping you improve your grammar. What you need to do now that you've identified that you have an issue with grammar is identify which of the grammar rules you use correctly and which you use incorrectly. After that, you need to relearn those rules so that you can start using them properly in future.
To improve your grammar, make a list of all the rules that apply to the area of grammar (eg. articles) first, and then check off the ones that you use appropriately to help you narrow down which ones you have to work on.
