[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
にする => にする N4
[事「こと」]ができる => Be able to A; can do A, Can A; be possible to A; N4
Causative, Passive, Volitional
すら/ですら => even ~ (with emphasis) N1
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
する => become ... N4
Situation, case
…すぎ ... => too much N4
Emphasis on degree
すぐ => Right now N5
Short period of time
すき => to like... N5
Ability
すら,ですら => Even A N1
(Not)only , (Not) even
いたします => to do (polite form of します) N4