I _________(teach) hundreds of students but I _______ (never meet) such a talented class as this.
have taught / have never met
I ________(ride) all the horses in the camp.
have ridden
I _______ (pump) up three tyres for the ride. Would you like to do the fourth?
have pumped
I __________ (try) to finish this letter completely for an hour.
have been trying
We ___________ (walk) for three hours.
have been walking
What a lovely smell! ~ Mary _________ (make) jam.
has been making
The instructor _________ (teach) in this camp for five years.
has been teaching
The students____________ (work) very well in this semester.
have been working
_________ (you / hear) the news? Tom and Ann are engaged!
Have you heard
I__________(sleep) on every bed in this camp and I don't like any of them.
have slept
We ________ (walk) ten kilometres.
have walked
That boy_____ (eat) seven scoops of ice-cream.
has eaten
I ______ (polish) this table all morning and she is not satisfied with it yet.
have been polishing
I ______ (work) in the amusement park for ten years.
have been working
I __________ (look) for mushrooms for hours but I ______ (not find) any.
have been looking / haven't found
He _______(sleep) since ten o'clock. It's time to wake up.
has been sleeping
How many apples __________ (you /pick)? ~ We___________ (pick) ten apples.
have you picked / have picked
You ______________ (walk) too fast, so you are tired.
have been walking
It ____________ (rain) for two hours, so the schedule has been changed.
has been raining
I________ (hear) about the roller coaster since it opened.
have heard