He (to shop) since morning, he already (to spend) a lot of money.
He has been shopping since morning, he has already spent a lot of money.
I'm sorry, we're late. You (wait) long?
Have you been waiting long?
My mother (to ask) me about my pocket money a dozen times.
My mother has asked me about my pocket money a dozen times.
I think John (to forget) my number. I (to expect) his call for the last 2 hours.
I think John has forgotten my number. I have been expecting his call for the last 2 hours.
How long (to know) you the truth?
How long have you known the truth?
What you (to do) for the last 3 hours?
What have you been doing for the last 3 hours?
I am tired. I (to work) for ten hours and I (not to finish) yet.
I have been working for ten hours and I hasn't finished yet.
We alwys (to live) in this flat?
We have always lived in this flat.