请大家看一下有无语法错误（英语）

There is only 90 days left, and what all we can do is to fight.
remember, always remember. you are not alone.
give yourself a promise, and I am sure you will make it.

FIGHT! FIGHT! FIGHT!
do give yourself a promise没有语法错误

没有错误
但是有点怪
有点中式英语

there are only 90 days left, the only thing we can do now is to fight.
But please remember and always remember,you are not alone
Give yourself a promise(这句有点奇怪 我不知道你想说什么） i konw you will make it.

there are only 90 days left, what all we can do is to fight.
remember, always remember. you are not alone
give yourself a promise, and i konw you will make it.

还可以吧,不影响交际.