[切「き」]れない => Can't finish/complete A N3
Potential, Possibility
に[限「かぎ」]る => A is the best N2
Information, Report
[恐「おそ」]れがある => There is a chance of A N2
Potential, Possibility
てくれる => Do for someone. N4
Give and take advice
に[限「かぎ」]って/に[限「かぎ」]り => Only A (A is a special condition) N2
(Not)only, (Not) even
がっている => Want, like N4
Secondary Verb
がっている => Wants to A N3
Will, Decision, Doing
てくれてありがとう => Thank you for doing A N4
Honorifics
がちです/がちになる => A tends to become/happen/occur N2
Potential, Possibility
とは限らない => A is not 100% N3
Information, Report
それが => Although (you'd expect) A, (actually) B, Even though A was planned, B N2
Contrast,Surprise
とされる => It is said/believed/thought that A N1
Information, Report