I have been serving in Gomal University________ fifteen years
Explanation
Explanation
I have been serving at Gomal University for fifteen years میں گومل یونیورسٹی میں پندرہ سال سے خدمات انجام دے رہا ہوں۔ *** The word 'for' is used to show a period of time, i n the past, present, or future.
