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noun
CEFR B1
an inquiry into unfamiliar or questionable activities
Brevlex writes every example sentence around your interests, then schedules it with spaced repetition so it sticks. No generic textbook line — a sentence for you.
Each source is a real, checkable word list that contains investigation. We never claim an official exam-board list — none is published for the GRE, GMAT, or SAT.