What's correct?

I want to know which is better:
1) "I gonna to go to school", or "I gonna go to school". [Neither is correct. write <em>I am going to go to school. Gonna </em>is short for <em>going to. </em>While many English speakers say this, we write out <em>going to, </em>unless we are writing dialog, in which case it is <em>"I'm gonna go to school". </em><em>I'm </em>is a contraction of <em>I am.</em>] 
2) "I was in a hospital", or "I got in a hospital". [<em>I was in a hospital </em>is correct, but you probably want to say <em>I was in the hospital.</em>] 
3) "I been in a hospital", or "I've been in a hospital". [<em>I've been in a hospital. </em>But again you probably want to say <em>I've been in the hospital.</em>] 
4) "I did in a hospital", or "I did it in a hospital". <em>[I did it in a hospital]</em>
5) just as I thought or just like I thought [<em>just as I thought]</em>

Thanks for reading