I will hard study English

I will hard study English i hard to study english I will study more hard I am a little （ ）at English.I will study hard.中间填什么? 为何不写"I hard study English" I will study hard from now on. I study hard to (i ) my spoken English If I study hard .I will get good grades If I study hard,I will p________get good grades. Tom said,"I study English very hard. " 变为间接引语 ___ in 2014,I study English hard every day. I am working hard to study english 对吗,如果对,study为什么不是进行时study