The students _______ (sit) in the classroom for 20 minutes, but the teacher hasn’t come yet.
have been sitting
I ______(write) e-mails since 10:00 this morning. So far, I _____(finish) about 20.
have been writing / have finished
My leg hurts. I __________ (break) while I was playing football.
have broken
Let’s sit down. I’m tired. We ________________(dance) for hours.
have been dancing
I love that restaurant. I ______(eat) there many times.
have eaten
Mr. Jones __________ (live) in our old apartment since we moved out.
has been living
They _______ (build) that office tower for almost two years.
have been building
Sam and Judy ________________ (know) each other since they were children
have known
Sara __________(be) in the hospital for over a month. She may come home next week.
has been
Andrea is planning to call the doctor this afternoon. She __________ (feel) sick for several days.
has been feeling
She _________ ( cook) all day because she’s having a big party tonight.
has been cooking
Please answer the phone. It _______________(ring) for the past five minutes.
has been ringing
The boys _______(fish) all afternoon. So far, they ___(catch) ten fish.
have been fishing / have caught
I smell chocolate in here! _________you____________ (bake)?
have you been baking
Go and wake up your father. He ___________ (sleep) all afternoon.
has been sleeping
Laura is at the mall. She _____________ (shop) all morning. She ______ already ________(buy) three new pairs of shoes, two dresses, and a coat.
has been shopping / has already bought
Our boss is going on a business trip, but he __________ (not/leave) yet
has not
left
Mr. and Mrs. Barnes are very excited about going to China next summer. They _________ (plan) this trip for over a year
have been planning
There is a police car parked on the street across from my house. I ________ (watch) it for over an hour, but nothing _________ (happen) yet.
have been watching / has happened
Kelly is standing on the corner. She _________(wait) for her boyfriend for the past twenty minutes.
has been waiting
It _________ (rain) steadily for the past two days
has been raining