ことはない => Not necessary N3
Needs, Requirement
ところを/ところに/ところへ => At time/situation A N2
Information, Report
こととて => Because A N1
Reason, Result, Response
ことになっている => Plan, rule, decide N2
Information, Report
こと => Do A (command) N2
Will, Decision, “Doing”
ところ => Have done N4
Situations and Experiences
ということは => A In other words, B; A Oh, so B N2
Adjectival, Descriptions
といったところだ => Display an amount/level/degree A (程度) N1
Degree/ Level/Amount
に[越「こ」]したことはない => It's better if A, it's better if it's A N1
Comparison/ Exchange
ことのないように => So as not to A N1
Will, Decision, Doing
ことにする => Decide to N4
Causative, Passive, Volitional
ないことはない => There is a (small) possibility of A. A is not impossible. N3
Potential, Possibility