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.