
operate(名词)operation grate(形容词)grsateful ill(名词) illnessmedicine(形容词)medicalvolunteer(形容词)volunteer diffcult(同义词)hard grow(名词)growth begin(过去分词)beginning

operate(名词)operation grate(形容词)grsateful ill(名词) illnessmedicine(形容词)medicalvolunteer(形容词)volunteer diffcult(同义词)hard grow(名词)growth begin(过去分词)beginning