H Tina, You need to practice speaking, reading, listening and writing and be able to comprehend. This takes time and practice, and yes high marks are important. You need to find someone to practice with, I am available if you need help. Respectfully, Norman

You need to get high marks in both.

They are not exluding from each other in fact ,if you find pleasure in studying English,you will sooner or later have a giant leap in your English level at which time the exams will not stand as a problem at all.However if you concentrated on reading and reciting good sentences and use it whenever possible and assisted with a big vocabulary,the English will not be so bothersome,while the press for oral English is not so much if you want good exam results only,but it is essential for overall study.

It depends on what your purpose/goal is. Getting high marks on exams is important at the time but really doesn't mean much once it's over. Real life lasts a lot longer so speaking, understanding, reading and writing would be my priority. That goes for any language.