[事「こと」]だ => A is necessary/good (offering advice/suggestion) N3
Needs, Requirement
すら,ですら => Even A N1
(Not)only , (Not) even
の[末「すえ」]/た[末「すえ」] => conclusion N2
Reason, Result, Response
[事「こと」]ができる => Be able to A; can do A, Can A; be possible to A; N4
Causative, Passive, Volitional
くする/にする => To make, to change into N5
Change, cause and effect
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
んです => Because, by… N4
Situations and Experiences
からすると => Considering A... N2
Considering, Concerning
すると => A. Right after, B N2
Time, Situation
ことにする => Decide to N4
Causative, Passive, Volitional
ずにはすまない/ないではすまない => A must be done N1
Potential, Possibility
~ます/~ません => Polite, present form N5
Verb suffixes