history: I have a big test next week. I plan on getting a really high grade. I know the material really well. I have a big test next week. I should be able score high. I know the material really well. Thats great news.  Did you have to study or is this an area you are already familiar with?
current: I have been studying. I always do well in this subject so it should be a breeze.
next: Awesome, good luck on your test! I hope it all goes well!