我不是很确定应该怎样填写这个表格的翻译：I'm not quite sure what to fill in this form 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

I'm not sure how to fill out this form should be

I'm not quite sure what to fill in this form

How amn't I very definite should fill in this form

I am not sure how I should fill in this form

I'm not quite sure what to fill in this form