She _____ had a cold _____ a few days.
She has had a cold for a few days.
How long _____ they _____ working on that project?
They've been working on that project _____.
How long _____ he _____ working out?
He has been working out _____.
How long _____ they _____ on strike?
They've been on strike _____.
How long _____ it _____ raining?
It's been raining _____.
