at ITS best
In general, the phrase “at its best” is used to convey the idea that something is performing or being experienced at the highest possible level. It is a way of saying that something is as good as it can possibly be.
basic
adjective + ONES
In the English Grammar Profile, B1 point 50 in the category of PRONOUNS/substitution is defined as: premodifiers with ‘ones’, to refer to something in general. *This is basically the same as B1 point 40. An iWeb search for: _JJ ones 1 LOVED ONES 102997 plural noun = people who are members of one’s family or a close