As long as you keep on studying hard,you will surely succeed.

只要你保持刻苦学习，你就一定会成功。

只要你一直努力学习，你就一定会成功的。
As long as 短语：只要
keep on doing sth 持续做某事

只要你坚持认真学习 你就肯定会取得成功

只要你坚持努力学习,你一定会成功.