Some students sit swarming same country. Not make use English to communicate, or even at school and do not interact with the teacher in a cause that they do not know.
Some students sit in the same country to congregate Do not use English to communicate or even in time and does not interact with the teacher in the room using the cause that they don't know.
Some of the students sat in the same, they are not so English is the language of communication or even in time to learn and do not interact with a teacher in the room, using reasons that they don't know