Learn English – How to ask ‘what to fill in blank’

phrase-requestsentence-construction

As the following sentence, Is this phrase correct: 'to fill in blank'?

For example: "But I'm not sure about to fill in blank at agency owner agreement document"

I just want to ask someone what I should put in the blank in a document. How could I say this? Does make it sense? I'm not sure if this is correct.

Best Answer

But I'm not sure about to fill in blank at agency owner agreement document.

I think that your example sentence is close enough that we can fix it up before I tell you how I would say it.

You are missing something before "to fill" to be the subject of the infinitive clause and you should put a determiner in front of "blank", like "the" or "this" if you are talking about a specific blank.

But I'm not sure about _____ to fill in the blank at agency owner agreement document.

You could say:

I'm not sure about how to fill in the blank at agency owner agreement document.
I'm not sure about what to fill in the blank at agency owner agreement document.

I would probably express the idea like this:

I'm not sure what I should put in the blank at "Agency Owner Agreement Document".

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