I don't like Alice. She about difficulties of life all the time.
has been complaining
I have read this chapter in my chemistry text three times, and still I it.
You do not hear what I am saying because you very absent-minded today.
you a ride home yet since he started working in your department?
Has Sam been giving
Does Sam give
Is Sam giving
Has Sam given
There! this big heavy cloud in the sky; I am sure it'll rain in a minute.
Do you see
Have you seen
Are you seeing
Have you been seeing
Peter and Mary on the platform. They have been waiting for their train for half an hour.
have been standing
Excuse me I a public telephone. Is there one near here?
have been looking for
have looked for
am looking for
Be careful with paint. It a certain amount of lead.
- Hello! May I speak to John, please? - Sorry, he is out. He has gone to the library. He for his History exam there.
has been reading
- What are you looking for? - I my umbrella somewhere, and now I don't know where it is.
have been leaving
How long Jerry? - But I don't know him at all. I have never met him.
do you know
have you known
has you known
did you know
The government is worried because the number of people without jobs .
has been increasing
It's raining, and I see you don't have an umbrella. You can borrow mine, I it now.
did not need
haven't been needing
Paul looks young for his age. He says he is 56 years old, but nobody him.
is not believing
The Alisons have got three cars, two of which they never .
have not use been using
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