prepare for exam

i was preparing for exam when i got my report card. it was super terrible and my father shouted at me but it was better than before, i mean i improved. i have only English tuition and i want to have science tuition but i cant because we dont have much money... i started studying with maths and science. i loved science when i was in korea because it is all korean so i can understand but here i cant speak English that good so i cant understand most of the book. if i born in England or America or Austrailia then my mark would be better because i can understand english and i like science. And your exam paper is really super hard and i cant get marks. i want to improve my english and i dont go with the korean so my english improved a lot and at home also i tried to speak english to korean but they scolded me because most of my friends are really bad at english so they scolded me first. i cant get marks from your exam paper and science paper, and rest of subjects are okay. if i born again then i want to born in English country you know what i mean... History is really medium sometimes easy and sometimes hard and the first mark i got is B. I was very lucky. I need to prepare for the exam but my history teacher didnt tell us where to study and i dont know what to do... i hope i get high marks