0 past simple and past participle of function
The theatre continued to function throughout the war.
I don't know how you functioned under those conditions.
The internet has thus functioned for the burgeoning movement as an anchor and definer of identity.
These were countries that functioned as plantation economies within the international division of labour, supplying tropical agricultural products to industrialised metropolitan countries.
The problem with the new technology of electric meters was the incomprehensibility of the mechanism by which it functioned.