I have been reading this book since morning
She has been cleaning the house since 10 a.m
We have been watching this film for 2 hours already
You have been talking to him for 1 hour
I have been writing letters since yesterday
Have you been waiting for me for long time?
I have been dancing for 2 hours
We have been fighting since morning
Has he been doing this excercise since yesterday?
I have been listening to you for 20 minutes already