I have done my best 、cry ·it too over;study hard什么意思啊

I tried my best in my study 什么意思 have done后面并列一个动词能不能省掉have?如I have tried my best to study ha I will do my best to study hard for but it was too hard. 什么意思 I have done my personal best 中文是什么? Do your best Do my best You and me study hard together I wil Don´t cry .Because it is over 什么意思啊 I Cry什么意思 I have over it I think I have tried my best.All that can be done ___. No matter what it happens,I will try my best to do it ! 什么意思 don't cry because it is over ,smile because it happend什么意思