Has he saved / Has he been saving enough money to buy a car yet?
Has he saved
The customer hasn’t replied / hasn’t been replying to our email.
hasn’t replied
I work for this company for about three years.
I’ve worked (or I’ve been working) for this company for about three years.
In my opinion, spending habits are changing for many years.
In my opinion, spending habits have been changing for many years.
Is there a problem with email? Your boss has tried / has been trying to contact you.
has been trying
We’re here since ten o’clock this morning.
We’ve been here since ten o’clock this morning.
Many of the women in the study have had / have been having at least three children.
have had
Have you listened / Have you been listening to me? This is important!
Have you been listening
For a long time I’ve been learning English.
I’ve been learning English for a long time.
The new director has run / has been running several successful companies in her career.
has run
I’ve visited / I’ve been visiting ten countries in the last three months.
I’ve visited
How long are you living here?
How long have you been living here?
I’ve just been hearing the news! Congratulations!
I’ve just heard the news! Congratulations!
I’m afraid we haven’t finished / haven’t been finishing the report.
haven’t finished