Prepositions & Future tense

Hi,

“Let’s call the inquiry line and see what you need.”

Is it wrong to say “Let’s call the inquiry line TO see what you need”?

In addition I’ve got another question, please.

“I’ve just realised that I don’t have a passport. I’ll pick up an application form from a post office.”

“You’re going to need your birth certificate.”

Well, wouldn’t it be more proper to say “You’LL need your birth certificate”?

Thanks a lot in advance. Cheerio

I’d be happy with all those options.

I’m happy if you are :slight_smile: