Английский 7 класс. Задание ниже

1. Mary has been writing a letter for an hour.
2. She has been cooking dinner since 2 p.m,
3.They have been talking since morning.
4.He has been making a fire for 20 minutes.

2
1.has been cooking
2. has been knitting
3.have been
4.have been building
5. have been working

3
1.I have been knowing Jane for 5 years,
2.He has been talking over the phone for 30 minutes already.
3.Ho long have you been living in England?
4. She has never travelled by air.