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mastery UK /əbˈskjʊə(ɹ)/ US /əbˈskjʊɹ/adjverb
card 1 of 10 · fill in the blank
The reason for his sudden decision to leave town has become _____ over the years.
card 1 of 10 · fill in the blank
The reason for his sudden decision to leave town has become _____ over the years.