They have all been friends _____ their first match as a team.
They have all been friends _____ their first match as a team.
Explanation
They have all been friends since their first match as a team.
وہ سب ایک ٹیم کے طور پر اپنے پہلے میچ سے ہی دوست ہیں۔
"Since" is used to indicate the starting point of a continuous period of time.