Can you start a sentence with its?

Answer 1

Why not? It is just a shorthand for "It is"

eg "It's a far better thing that I do now than I have ever done"

As long as the rest of the sentence makes sense with syntax, no problems.

Answer 2

I'm pretty sure you can as you can start a sentence with "It was" and so you can with "It is"

"It" is the same as "she and he" and you can definitly start a sentence with those! But instead of saying its at the beginning of the sentence use it is as it sounds better! Hope I helped!

Answer 3

Yes. "It" is a pronoun and can be used in place of a noun. Example: "It glows in the dark."