をかわきりに => Starting with A N1
Miscellaneous
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
を[契機「けいき」] => As a good opportunity A, (do) B N2
Information, Report
というより => Rather than A N3
Comparison, Exchange
をおいて~ない => Other than A, B N1
(Not)only , (Not) even
を[機「き」]に => Use A as an opportunity N1
Time, Situation
ときている => Because of A N1
Reason, Result, Response
てくれてありがとう => Thank you for doing A N4
Honorifics
ふりをする => To pretend to (be) A N3
Adjectival, Description
きりがない => There's no end to A, there's no bounds to A N1
Adjectival, Descriptions
を[経「へ」]て => After A N1
Time, Situation