I / study / this morning
I have been studying since this morning.
Jane / eat / that burger / half an hour
Jane has been eating that burger for half an hour.
he / walk the dog / all afternoon
He has been walking the dog all afternoon.
the tap / leak / six days
The tap has been leaking for six days.
you / watch / that series / yesterday?
Have you been watching that series since yesterday?
the water / boil / ten minutes
The water has been boiling for ten minutes.
you / play video games? / no, I / read
Have you been playing video games? No, I've been reading.
how long / you / rollerskate? / I / rollerskate / last summer
How long have you been rollerskating? I've been rollerskating since last summer.
they / paint / the livingroom / two hours
They have been painting the living room for two hours.
the baby / sleep / three hours?
Has the baby been sleeping for three hours?
she / swim / five o'clock
She has been swimming since five o'clock.
we / work on / the project / November
We have been working on the project since November.