If you don t express yourself clearly in good English, your ideas will be ignored. At the very least you should know what the words mean. I look for your application of theory to practical situations. You re not supposed to clog your mind with memorized rules or theories. If you can t apply them can t see how they really could work you re just wasting brain space.
Many answers can be workable solutions to a given marketing problem.
By the way, you won t get more credit for agreeing with me on a topic. I hope you ll develop your own ideas.