I study

I study I self study or I self-study? I study in I study at St I study manth well why du I study English I often study English by_____ I want to study English I will study more hard I want to study English but i have to study I have to study very I help him ()his study. How can I study English? HOW could I study english How can i study English? I have to study chinese. i hard to study english