Choose the correct answer with “since”.

Варианты ответа

1. A.I have been studying English ______ I was 12.верно
2. B.She has been in the post ______ 5 months.
3. C.This company has been very successful ______ the last ten years.
4. D.We've been working with you ______ 10 years.
5. E.I haven't had a break ______ six hours.