ことにする => Decide to N4
Causative, Passive, Volitional
こそすれ => B is definitely not so (strongly emphasized) N1
Contrast/Surprise
[少「すこ」]しも~ない => Not (even a little) A N3
Not only, Not even
させて[頂「いただ」]きます/させてもらいます => Allow me to A N1
Miscellaneous
たことにする => To do/act/pretend as if A N1
Will, Decision, Doing
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
きり => Only A N3
Degree. Level, Amount
[極「きわ」]み/[極「きわ」]まりない => Extremely A N1
Degree/ Level/Amount
んです => Because, by… N4
Situations and Experiences