1 I've already been studying English for several years. We read translate texts, answer our teacher's questions on lessons.
2 we are having an English lesson now. We are revising english tenses
3 we have already written some tests on this rule
4 yesterday I was late for the lesson. When I entered the room the students of our group were writing a test. They had been writing it for 20 minutes already
5 where do you study? How many years have you been studying here? When did you finish school?