I feel sick. I _____________ (eat) chips for three hours straight.
have been eating
He _____________ (look) for her keys for an hour.
has been looking
How many times _________ (you/take) this exam?
have you taken
Her legs hurt because she __________ (work out) for hours.
had been working out
I _______ (wait) at the airport for hours for my plane to take off. I'm getting tired.
have been waiting
I've been waiting for the waiter to bring my food, but the chef __________ (cook) it yet.
hasn't cooked
