In a matter of speaking, listening and pronunciation is not maen and listening. If we use or speak English in the classroom frequently, we will learn new words that we don't know.
In a matter of speaking, we are not exactly the pronunciation and listening. If we use them or speak English in class, we will learn new words that we know well.
In speaking, listening, we will not accurately the pronunciation and listening. If we use or to speak English in class, we will learn new words that we don't know yet.