"我唔知信唔信好"個英文點寫....

I don't know I'll believe it or not.

信我la! 我讀女拔ga!

I don't know I'll believe it or not. 是「我不知道我是否會相信他/它」
反而其他未選中的答案有不止一個是正確地說出問題的意思的!!

This answer is incorrect, no wonder it's got lots of negative evaluation. Studying in a prestigious school doesn't mean you're always right, if you're really in that school.

I don't know whether I should believe it or not

I am not sure if I can trust them ( it / him / her ....etc )

I don't know can I believe you or not.

I have no idea whether should or not believe it.

I don't know whether to believe it or not.
I don't know if I should believe.

I do not know the letter not to believe well

I don't know whether I trust or not.