[事「こと」]だ => A is necessary/good (offering advice/suggestion) N3
Needs, Requirement
事と次第によって => Depending on the progress of the situation N2
How to say the beginning
[事「こと」]ができる => Be able to A; can do A, Can A; be possible to A; N4
Causative, Passive, Volitional
に[限「かぎ」]った[事「こと」]ではない => It's not limited to A, it's not only A N1
Degree/ Level/Amount
一緒に => together N5
(の中)で~が一番~です => out of this group, [A] is best N5
一度に => all at once N3
一通り => Basically, (get) over, done N2
Base, base
一方だ => more and more; continue to ~ N2
一応 => more or less; pretty much; roughly; tentatively ~ N2
一体 => …the heck; …in the world; …on earth N3
一方 => on one hand, on the other hand; although ~ (conjunction) N2