2: it has different ways
for example different self study books or special English courses at institutes or using social media.
3:if the speakers of a language decreased it'll become an endangered language and all it's knowledge will disappear.
4: speaking. talking. listening. writing
all of them are important but speaking might be more important because we use it more to communicate during a day.
and it's more common between people in real life.
Amirali Kaveh
نمیدونستم چقدر باید جواب داشته باشه ولی همینقدر نوشتم.
