Question

Помогите пожалуйста ответить на вопросы
1)How long have you been using this book?
2)How long have you been studying English?
3)How long have you been learning English ?
4)How long have you been working on this lesson?
5)How long have you been sitting in this room?

Answer 1

1) I have been using this book for two weeks.
2) I've been studying English for 6 years
3) 2 и 3 вопрос одинаковый. 
4) I'm working on this lesson for ten minutes
5) In this room I sit an hour