Present Perfect Continuous - Signal words
Present Perfect Continuous: Fill in the correct signal words.

How long have you been playing football?
She has been waiting here for hours.
They have been learning French since 2005.
She has been speaking on the phone for hours.
He has been digging the garden all morning.
The family has been looking for the hotel for 20 minutes.
I have been reading this book since Christmas.
How long have we been sitting here?
Jake has been living in London since he was a child.
The dog has been barking all night.