Only by working very hard ( ) a good mark in the exam.

Only by working very hard ( ) a good mark in the exam.
A、you have gotten
B、you may get
C、can you get
D、can get you
【正确答案】：C
【题目解析】：only 置于句首，部分倒装。句子含义是只有努力学习，你才能在考试中取得高分。