Are both sentences OK?
I'm wondering if it's okay to get an advance on my salary.
I was wondering if it was possible to get an advance on my salary.

Question

Answer

Both sentences are correct, but the second one would make more sense to ask to your superior. Usually this sort of question requires a little more formal language, so the second sentence would work better.

Answer

Second answer is better. BUT. It's "I was wondering if it IS okay to get an advance on my salary."

That's all.

Answer

I agree with Tom.  Both sentences are correct, but the second one is much more polite.

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