Ułuż pytania i odpowiedzi od kiedy w odpowiedzi musi być for lub since

How long have you had a mobile phone?How long has your family lived here?How long has your teacher worked at this school?How long have you liked your favourite actor?How long have you and your friends known each other?How long has your favourite singer been a star? I have had a mobile phone for 5 years.My family has lived here since 1999.My teacher has worked at this school for ten years.I have liked him/her for 5 months .We have known each other for ages.She/he has been my favourite singer since last holidays.