In a test I found this sentence about a young designer called Sue Thomas.
She has sold clothes to a lot of famous people including film stars and singers, and she thinks she will be rich soon.
I am wondering if "has been selling" can fit; in this case is it a stylistic choice? I think that choosing present perfect simple is to show that she has managed to do this as a proof of her success.
However, we can also think that this fact of "selling to famous people" will continue in the future, so present perfect continuous shall be good, even if "selling to famous people" does not happen every day.
But as the present "sells" is given as another good solution, we can think that it is now common for this designer to sell to celebrities.
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