Thanks you all,but i can not choose two answers ...

题目

Thanks you all,but i can not choose two answers ...
Thanks you all,but i can not choose two answers at the same time so i want to say sorry for you.
但我不能同时选择两个答案,所以我想对你们说一声对不起.
我上面用的英语 有没有语法的错误?
我在书上看见有这么一句：
I know you all.
这句可以换成这样的吧？I know all of you.
所以我就想 Thanks you all.可不可以等价于 Thanks (to) all of you.(不加to可以吧？

答案

没大问题
有两处：thanks you all 改成 thank you all 如果是两个人就说 thank both of you.结尾 say sorry for you 改成 say sorry to you