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adjective
CEFR B1
for the entire time appropriate to an activity
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 full-time. We never claim an official exam-board list — none is published for the GRE, GMAT, or SAT.