Do your best Do my best You and me study hard together I wil

Do your best Do my best You and me study hard together I wil I will do my best to study hard for You do your best. How do you study best? Wait for me .I do my best. Do your best,I believe you will just do your best,I believe you. Because of you,I need do my best to my study So I must give i will try my best 和 i will do my best thy和do有什么区别?为什么 i wil Tell me that you do your best for me.I believe in your faith 请问 I DO MY BEST I WILL DO MY BEST