"According to a Crown filing, some of the accused who frequented the camp practised military-style exercises in camouflage gear and got training with a 9-mm weapon.".
hi there,
i have seen "to frequent" being used as "to attend". is it very formal English? how should I say during casual situations, please?
thanks.
PS: this text is an excerpt from an internet newspaper. is the word "practised" correct? should it be "practiced"?

