But there was one thing he was never really sure about.
I'm not really sure about what is worse for those people...
I'm not really sure it's clear whose birthday it is though.
No tengo muy claro cuantos años cumple, sin embargo.
I'm not really sure what that says about my basic nature.
I'm not really sure you should do that while you drive.
Let's keep our relationship on the down-low until we're really sure.
I'm not really sure where your loyalties lie these days.
I'm not really sure what you mean when you say that.
I'm just not really sure why I should at the moment.
I'm not really sure what kind of message that sends.
No estoy muy segura de qué tipo de mensaje envía eso.
We're not really sure, but it might be potassium hydroxide.
I'm not really sure why this is even a question.
No estoy muy segura de por qué esto es una pregunta.
I'm not really sure that's any of your business.
No estoy muy seguro de que eso sea de tu incumbencia.