closely, rigorously, extensively, actively, diligently, intensely, assiduously, aggressively, vigorously, exhaustively, minutely, energetically, carefully, productively, constructively, cooperatively, avidly, furiously, sensitively, tirelessly, systematically, keenly, feverishly, fruitfully, thoroughly, robustly, arduously, stringently, optimally, dispassionately, meticulously, sensibly, relentlessly, bilaterally, intently, obsessively, methodically, continuously, internally, prudently, usefully, flexibly, efficiently, vigilantly, attentively, painstakingly, conscientiously, strenuously, effectively, separately, ceaselessly, heavily, pragmatically, earnestly, patiently, tenaciously, stably, studiously, deliberatively, jointly, properly, independently, zealously, scrupulously, laboriously, doggedly, maximally, industriously, expeditiously, cohesively, hotly, cautiously, strategically, constantly, objectively, successfully, intelligently, valuably, ferociously, professionally, synergistically, comprehensively, competently, selectively, internationally, hard, urgently, judiciously, concretely, skillfully, individually, ruthlessly, thoughtfully, endlessly, globally, densely, favorably, fruitlessly, regularly, frenetically, advantageously, broadly

audio lingual acquisition, blaze, bone, bone up, cram, drum, get up, grind away, judder, mug up, shake, swot, swot up