Study hard，od you can't catch up with your classmates.（改为同义句）

Question

_____ you _____ study hard,you won't catch up with your classmates.
打错，是or

Answer 1

If ， don't

Answer 2

If don't

祝：学习进步，更上一层楼！ (*^__^*)
不明白的再问哟，请及时采纳，多谢！

Answer 3

If don't