That is beautiful.
When was Barack Obama president. When did you go to the mall. When will your parents be coming over. When I saw them I shivered.
I think you can't actually make a proper sentence using the word it. But if someone asks you a question like "what is that box for?" Than you can say like "there is toys in it" That is how I will use...
I can give you an example sentence. The can of tuna was dented. You should can vegetables to eat in the winter.
Its bag is over there