[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[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
[事「こと」]ができる => Be able to A; can do A, Can A; be possible to A; N4
Causative, Passive, Volitional
...か... (か) => Or... N5
Related, corresponding
~か、~か => or N5
…からか/…せいか/…のか => perhaps because ~. N3
Cause, reason
…か…かで => either…or N4
Line up, list
か何か => or something N3
~たかだか => At best... N1
Plan
かなにか => or something N4
Demonstrate by example
かどうか => whether or not ~ N4