The doctor ____ _____ operating for 4 hours.
has been
The lights _____ _____ _______ (go) on and off all evening.
have been going
The birds _____ ______ flying around all summer.
have been
It ___ _______ ______ (rain) for days.
has been raining
The birds ____ ______ chirping all morning.
have been
My friend ____ _____ _______(drink) a lot of coffee lately.
has been drinking
She _____ _____ cancelling our meetings all week.
has been
He ____ _____ _______ (climb) for a few hours.
has been climbing
My uncle ____ _____ traveling around the US for six months.
has been
I ____ _____ _______ (work) in the garden all morning.
have been working
_____ you been taking your medicine?
have
We ____ _____ _____ (wait) in the cold for an hour.
have been waiting
_____ the team been playing all day?
Has
Jim ____ _____ _______ (play) tennis since he was six.
has been playing
The woman ____ ______ _____ (learn) how to play for 3 months.
has been learning
He ___ _____ _____ (study) for this test all week.
has been studying
_____ he been crying?
Has
The planes ____ ______ flying in circles.
have been
I ____ _____ _______ (train) for this marathon since last year.
have been training
_____ he been eating a lot?
Has
They ____ _____ _____ (cut) hair for 10 years.
have been cutting
The flowers _____ _____ blooming.
have been
_____ they been going to class?
Have
I ____ _____ ______ (look) for my keys all day.
have been looking
My friends ____ ______ _______ (build) a cabin in the mountains.
have been building
The students ____ _____ _____ (meet) after school every day.
have been meeting