Что вы считаете наиболие полезным в изучение английского. Нужен ответ на вопрос

If i'll good lear English langueage, i could have a lot of friends all around the world. Aslo i'll able to speak with people in any county of world, becasue English-international language. There is a lot of pluses, but the mainest one was described by me above