7предложений в present perfect continuous

1)He has been playing football for 2 hours. 
2)I have been waiting here for 2 hours!
3)She has been working here for five years.
4)You have not been waiting for me for two hours.
5)Have they been working since morning? 
6)Have I or my sister been reading a book for a month?
7)Have I been reading a book for a month or for a year?