sedulous, assiduous, hardworking, industrious, persevering, tireless, untiring, patient, laborious, earnest, more...

lazy, slothful, indolent

hardworking, dedicated, committed, persistent, industrious, conscientious, assiduous, tireless, thorough, more...

more, extra, own, wondrous, same, mighty, least, wonderful, seest, brig, skilful

working hard,   works hard,   good student,   hard at work,   trying very hard,   good worker,   hardworking person,   trying really hard,   focused at work,   always working