我希望我能取得更好的成绩（中译英）

I hope I could make good grades
我希望我能取得更好的成绩

I hope I could get a better account
我希望我能取得更好的成绩

I hope I will give a better account of myself in the next examination.
我希望我下次考试有更好的成绩。

I hope that I can get good grades.

I hope I can do better.
I hope I can get a better mark.
I hope I can achieve more.

I hope I can get better greads.

I hope I could make more progress.