I shall work hard in study.中文意思请回答

I shall work hard in study.中文意思请回答 work hard in还是work hard at? work hard in 还是work hard on I have success in finishing my hard work同意句 I wish you to experience a wonderful life and grow to be a helpful man in the society.From now on,let’s work hard to achieve our dream,shall we?的意思 I work hard at school. I will work hard for I must work hard 是什么意思 hard at work school I(? Thanks,i will work hard. At work,I must work hard We shall work hard at English.(改为一般疑问句） I work hard.Thcy don' t work hard. I am w_____ in Chinese.I must work hard at it. I failed in this esaminatiom,but I will work hard next I’m c_______ I can do well in English through hard work. Don't you thina it to high time that we__ to achieve our goalsA.would work hard B.work hard C.shall work hard D.worked hard I want to get my room in order.That is a hard work.