Millie,you must ___and get good marks.A.hard working B.hard

Millie,you must ___and get good marks.A.hard working B.hard To get a high score___.A.one must work hard.B.working hard i tom is very hard-working and he can get good marks in the te if you work hard,you'll get good marks(保句意)、 ____hard,___you if you study hard ,you 'll get good marks(保持句意) if you （）working hard ,you（）（）good marks.如果你继续努力,你会取得好的成绩 ---to a good college,you must study hard.A To go B Going you can get good grades ＿＿hard A.to work B.in wo ( )good grades,you should study hard.A Getting B Get C For g hard,you,get,mark,work,and,will,good,a Think hard,----you'll get a good idea. working hard is good for you为啥用working