As a senior student, you may have realized the importance of English. But now can you study English well?
I think it necessary that you should try your best to use English. We study English, not study about English. That a person knows a set of grammatical rules and a lot of English words does not mean that he has mastered English. A student’s mastery of English is ultimately measured by how well he can use it, not by how much he knows about it. I believe that learning English is just like learning to play the piano. A student of the piano lessons has only one purpose: after practicing, he must be able to play the piano. So you should also have such a purpose: you must be able to use English.
Using English consists of speaking English and writing compositions in English. In order to improve your spoken English, you’d better take an active part in the teacher’s lectures, answer his questions in English, and try to speak as much English as you can after class. Writing English journals is the best way to improve your writing. At the same time, you should listen to and read more English.

