Work hard when you are in class. you will catch up with your classmates quickly.A On the

问题补充：

Work hard when you are in class. , you will catch up with your classmates quickly.

A、On the way B、In this way C、By the way

答案：

解析：句意：上课时努力学习，用这种方法，你就会很快赶上其他同学。A、On the way在途中；B、In this way 用这种方法；C、By the way顺便说一下。结合语境可知选B。